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Finding the Fourth Proportional to 21,374.92, 32,068.28 and 8,900.80

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Solution

The fourth proportional to 21,374.92, 32,068.28 and 8,900.80 is: 13,353.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,374.92 : 32,068.28 = 8,900.80 : x
  2. Step 2: Convert to fraction form
    21,374.92/32,068.28 = 8,900.80/x
  3. Step 3: Cross multiply
    21,374.92x = 32,068.28 × 8,900.80
  4. Step 4: Simplify right side
    21,374.92x = 285,433,346.62
  5. Step 5: Solve for x
    x = 285,433,346.62/21,374.92
  6. Step 6: Final answer
    x = 13,353.66

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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.