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Finding the Fourth Proportional to 21,562.59, 32,343.89 and 13,672.98

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Solution

The fourth proportional to 21,562.59, 32,343.89 and 13,672.98 is: 20,509.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,562.59 : 32,343.89 = 13,672.98 : x
  2. Step 2: Convert to fraction form
    21,562.59/32,343.89 = 13,672.98/x
  3. Step 3: Cross multiply
    21,562.59x = 32,343.89 × 13,672.98
  4. Step 4: Simplify right side
    21,562.59x = 442,237,292.73
  5. Step 5: Solve for x
    x = 442,237,292.73/21,562.59
  6. Step 6: Final answer
    x = 20,509.47

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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.