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Finding the Fourth Proportional to 14,615.72, 21,929.82 and 9,687.08

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Solution

The fourth proportional to 14,615.72, 21,929.82 and 9,687.08 is: 14,534.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,615.72 : 21,929.82 = 9,687.08 : x
  2. Step 2: Convert to fraction form
    14,615.72/21,929.82 = 9,687.08/x
  3. Step 3: Cross multiply
    14,615.72x = 21,929.82 × 9,687.08
  4. Step 4: Simplify right side
    14,615.72x = 212,435,920.73
  5. Step 5: Solve for x
    x = 212,435,920.73/14,615.72
  6. Step 6: Final answer
    x = 14,534.76

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1.5x scale

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.