Home / 12,127,934.70-18,191,902.05-7,076,645.10

Finding the Fourth Proportional to 12,127,934.70, 18,191,902.05 and 7,076,645.10

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Solution

The fourth proportional to 12,127,934.70, 18,191,902.05 and 7,076,645.10 is: 10,614,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,127,934.70 : 18,191,902.05 = 7,076,645.10 : x
  2. Step 2: Convert to fraction form
    12,127,934.70/18,191,902.05 = 7,076,645.10/x
  3. Step 3: Cross multiply
    12,127,934.70x = 18,191,902.05 × 7,076,645.10
  4. Step 4: Simplify right side
    12,127,934.70x = 128,737,634,501,812.45
  5. Step 5: Solve for x
    x = 128,737,634,501,812.45/12,127,934.70
  6. Step 6: Final answer
    x = 10,614,967.65

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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.