Home / 12,312,129.60-18,468,194.40-5,121,273.60

Finding the Fourth Proportional to 12,312,129.60, 18,468,194.40 and 5,121,273.60

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Solution

The fourth proportional to 12,312,129.60, 18,468,194.40 and 5,121,273.60 is: 7,681,910.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,312,129.60 : 18,468,194.40 = 5,121,273.60 : x
  2. Step 2: Convert to fraction form
    12,312,129.60/18,468,194.40 = 5,121,273.60/x
  3. Step 3: Cross multiply
    12,312,129.60x = 18,468,194.40 × 5,121,273.60
  4. Step 4: Simplify right side
    12,312,129.60x = 94,580,676,420,387.83
  5. Step 5: Solve for x
    x = 94,580,676,420,387.83/12,312,129.60
  6. Step 6: Final answer
    x = 7,681,910.40

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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.