Home / 54,654.12-81,981.28-15,211.24

Finding the Fourth Proportional to 54,654.12, 81,981.28 and 15,211.24

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Solution

The fourth proportional to 54,654.12, 81,981.28 and 15,211.24 is: 22,816.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,654.12 : 81,981.28 = 15,211.24 : x
  2. Step 2: Convert to fraction form
    54,654.12/81,981.28 = 15,211.24/x
  3. Step 3: Cross multiply
    54,654.12x = 81,981.28 × 15,211.24
  4. Step 4: Simplify right side
    54,654.12x = 1,247,036,925.59
  5. Step 5: Solve for x
    x = 1,247,036,925.59/54,654.12
  6. Step 6: Final answer
    x = 22,816.89

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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.