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Finding the Fourth Proportional to 14,565.68, 21,877.68 and 14,215.76

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Solution

The fourth proportional to 14,565.68, 21,877.68 and 14,215.76 is: 21,352.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,565.68 : 21,877.68 = 14,215.76 : x
  2. Step 2: Convert to fraction form
    14,565.68/21,877.68 = 14,215.76/x
  3. Step 3: Cross multiply
    14,565.68x = 21,877.68 × 14,215.76
  4. Step 4: Simplify right side
    14,565.68x = 311,007,848.24
  5. Step 5: Solve for x
    x = 311,007,848.24/14,565.68
  6. Step 6: Final answer
    x = 21,352.10

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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.