Home / 20,340,921.12-28,062,560-11,518,347.12

Finding the Fourth Proportional to 20,340,921.12, 28,062,560 and 11,518,347.12

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Solution

The fourth proportional to 20,340,921.12, 28,062,560 and 11,518,347.12 is: 15,890,839.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340,921.12 : 28,062,560 = 11,518,347.12 : x
  2. Step 2: Convert to fraction form
    20,340,921.12/28,062,560 = 11,518,347.12/x
  3. Step 3: Cross multiply
    20,340,921.12x = 28,062,560 × 11,518,347.12
  4. Step 4: Simplify right side
    20,340,921.12x = 323,234,307,155,827.19
  5. Step 5: Solve for x
    x = 323,234,307,155,827.19/20,340,921.12
  6. Step 6: Final answer
    x = 15,890,839.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.