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Finding the Fourth Proportional to 20,569.60, 30,789.60 and 14,737.60

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Solution

The fourth proportional to 20,569.60, 30,789.60 and 14,737.60 is: 22,059.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,569.60 : 30,789.60 = 14,737.60 : x
  2. Step 2: Convert to fraction form
    20,569.60/30,789.60 = 14,737.60/x
  3. Step 3: Cross multiply
    20,569.60x = 30,789.60 × 14,737.60
  4. Step 4: Simplify right side
    20,569.60x = 453,764,808.96
  5. Step 5: Solve for x
    x = 453,764,808.96/20,569.60
  6. Step 6: Final answer
    x = 22,059.97

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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.