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Finding the Fourth Proportional to 29,528.66, 40,739.38 and 20,572.90

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Solution

The fourth proportional to 29,528.66, 40,739.38 and 20,572.90 is: 28,383.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,528.66 : 40,739.38 = 20,572.90 : x
  2. Step 2: Convert to fraction form
    29,528.66/40,739.38 = 20,572.90/x
  3. Step 3: Cross multiply
    29,528.66x = 40,739.38 × 20,572.90
  4. Step 4: Simplify right side
    29,528.66x = 838,127,190.80
  5. Step 5: Solve for x
    x = 838,127,190.80/29,528.66
  6. Step 6: Final answer
    x = 28,383.52

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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.