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Finding the Fourth Proportional to 15,788.68, 23,683.02 and 5,400.52

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Solution

The fourth proportional to 15,788.68, 23,683.02 and 5,400.52 is: 8,100.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.68 : 23,683.02 = 5,400.52 : x
  2. Step 2: Convert to fraction form
    15,788.68/23,683.02 = 5,400.52/x
  3. Step 3: Cross multiply
    15,788.68x = 23,683.02 × 5,400.52
  4. Step 4: Simplify right side
    15,788.68x = 127,900,623.17
  5. Step 5: Solve for x
    x = 127,900,623.17/15,788.68
  6. Step 6: Final answer
    x = 8,100.78

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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.