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Finding the Fourth Proportional to 21,444.54, 32,160.65 and 7,400.92

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Solution

The fourth proportional to 21,444.54, 32,160.65 and 7,400.92 is: 11,099.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,444.54 : 32,160.65 = 7,400.92 : x
  2. Step 2: Convert to fraction form
    21,444.54/32,160.65 = 7,400.92/x
  3. Step 3: Cross multiply
    21,444.54x = 32,160.65 × 7,400.92
  4. Step 4: Simplify right side
    21,444.54x = 238,018,397.80
  5. Step 5: Solve for x
    x = 238,018,397.80/21,444.54
  6. Step 6: Final answer
    x = 11,099.25

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.