Home / 12,153,676.80-18,230,515.20-7,618,713.60

Finding the Fourth Proportional to 12,153,676.80, 18,230,515.20 and 7,618,713.60

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Solution

The fourth proportional to 12,153,676.80, 18,230,515.20 and 7,618,713.60 is: 11,428,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,153,676.80 : 18,230,515.20 = 7,618,713.60 : x
  2. Step 2: Convert to fraction form
    12,153,676.80/18,230,515.20 = 7,618,713.60/x
  3. Step 3: Cross multiply
    12,153,676.80x = 18,230,515.20 × 7,618,713.60
  4. Step 4: Simplify right side
    12,153,676.80x = 138,893,074,089,246.70
  5. Step 5: Solve for x
    x = 138,893,074,089,246.70/12,153,676.80
  6. Step 6: Final answer
    x = 11,428,070.40

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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.