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Finding the Fourth Proportional to 28,304.79, 42,463.11 and 11,664.68

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Solution

The fourth proportional to 28,304.79, 42,463.11 and 11,664.68 is: 17,499.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,304.79 : 42,463.11 = 11,664.68 : x
  2. Step 2: Convert to fraction form
    28,304.79/42,463.11 = 11,664.68/x
  3. Step 3: Cross multiply
    28,304.79x = 42,463.11 × 11,664.68
  4. Step 4: Simplify right side
    28,304.79x = 495,318,746.86
  5. Step 5: Solve for x
    x = 495,318,746.86/28,304.79
  6. Step 6: Final answer
    x = 17,499.47

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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.