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Finding the Fourth Proportional to 21,395.60, 32,125.80 and 16,470.80

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Solution

The fourth proportional to 21,395.60, 32,125.80 and 16,470.80 is: 24,731.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,395.60 : 32,125.80 = 16,470.80 : x
  2. Step 2: Convert to fraction form
    21,395.60/32,125.80 = 16,470.80/x
  3. Step 3: Cross multiply
    21,395.60x = 32,125.80 × 16,470.80
  4. Step 4: Simplify right side
    21,395.60x = 529,137,626.64
  5. Step 5: Solve for x
    x = 529,137,626.64/21,395.60
  6. Step 6: Final answer
    x = 24,731.14

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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.