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Finding the Fourth Proportional to 20,505.60, 30,646.03 and 14,970.60

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Solution

The fourth proportional to 20,505.60, 30,646.03 and 14,970.60 is: 22,373.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.60 : 30,646.03 = 14,970.60 : x
  2. Step 2: Convert to fraction form
    20,505.60/30,646.03 = 14,970.60/x
  3. Step 3: Cross multiply
    20,505.60x = 30,646.03 × 14,970.60
  4. Step 4: Simplify right side
    20,505.60x = 458,789,456.72
  5. Step 5: Solve for x
    x = 458,789,456.72/20,505.60
  6. Step 6: Final answer
    x = 22,373.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.