Home / 12,290,701.40-18,436,052.10-11,072,979.80

Finding the Fourth Proportional to 12,290,701.40, 18,436,052.10 and 11,072,979.80

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Solution

The fourth proportional to 12,290,701.40, 18,436,052.10 and 11,072,979.80 is: 16,609,469.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,290,701.40 : 18,436,052.10 = 11,072,979.80 : x
  2. Step 2: Convert to fraction form
    12,290,701.40/18,436,052.10 = 11,072,979.80/x
  3. Step 3: Cross multiply
    12,290,701.40x = 18,436,052.10 × 11,072,979.80
  4. Step 4: Simplify right side
    12,290,701.40x = 204,142,032,495,047.62
  5. Step 5: Solve for x
    x = 204,142,032,495,047.62/12,290,701.40
  6. Step 6: Final answer
    x = 16,609,469.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.