Home / 10,121,131.20-15,181,696.80-9,144,854.40

Finding the Fourth Proportional to 10,121,131.20, 15,181,696.80 and 9,144,854.40

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Solution

The fourth proportional to 10,121,131.20, 15,181,696.80 and 9,144,854.40 is: 13,717,281.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121,131.20 : 15,181,696.80 = 9,144,854.40 : x
  2. Step 2: Convert to fraction form
    10,121,131.20/15,181,696.80 = 9,144,854.40/x
  3. Step 3: Cross multiply
    10,121,131.20x = 15,181,696.80 × 9,144,854.40
  4. Step 4: Simplify right side
    10,121,131.20x = 138,834,406,780,945.94
  5. Step 5: Solve for x
    x = 138,834,406,780,945.94/10,121,131.20
  6. Step 6: Final answer
    x = 13,717,281.60

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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.