Home / 20,812,382.60-28,721,142.65-11,520,593.42

Finding the Fourth Proportional to 20,812,382.60, 28,721,142.65 and 11,520,593.42

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Solution

The fourth proportional to 20,812,382.60, 28,721,142.65 and 11,520,593.42 is: 15,898,449.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,812,382.60 : 28,721,142.65 = 11,520,593.42 : x
  2. Step 2: Convert to fraction form
    20,812,382.60/28,721,142.65 = 11,520,593.42/x
  3. Step 3: Cross multiply
    20,812,382.60x = 28,721,142.65 × 11,520,593.42
  4. Step 4: Simplify right side
    20,812,382.60x = 330,884,606,913,667.12
  5. Step 5: Solve for x
    x = 330,884,606,913,667.12/20,812,382.60
  6. Step 6: Final answer
    x = 15,898,449.18

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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.