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Finding the Fourth Proportional to 21,624.52, 29,841.82 and 11,688.52

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Solution

The fourth proportional to 21,624.52, 29,841.82 and 11,688.52 is: 16,130.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,624.52 : 29,841.82 = 11,688.52 : x
  2. Step 2: Convert to fraction form
    21,624.52/29,841.82 = 11,688.52/x
  3. Step 3: Cross multiply
    21,624.52x = 29,841.82 × 11,688.52
  4. Step 4: Simplify right side
    21,624.52x = 348,806,709.91
  5. Step 5: Solve for x
    x = 348,806,709.91/21,624.52
  6. Step 6: Final answer
    x = 16,130.15

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1.5x scale

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.