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Finding the Fourth Proportional to 22,125.60, 30,532.80 and 12,693.60

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Solution

The fourth proportional to 22,125.60, 30,532.80 and 12,693.60 is: 17,516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,125.60 : 30,532.80 = 12,693.60 : x
  2. Step 2: Convert to fraction form
    22,125.60/30,532.80 = 12,693.60/x
  3. Step 3: Cross multiply
    22,125.60x = 30,532.80 × 12,693.60
  4. Step 4: Simplify right side
    22,125.60x = 387,571,150.08
  5. Step 5: Solve for x
    x = 387,571,150.08/22,125.60
  6. Step 6: Final answer
    x = 17,516.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.