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Finding the Fourth Proportional to 32,874.80, 45,368.80 and 20,123.92

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Solution

The fourth proportional to 32,874.80, 45,368.80 and 20,123.92 is: 27,771.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,874.80 : 45,368.80 = 20,123.92 : x
  2. Step 2: Convert to fraction form
    32,874.80/45,368.80 = 20,123.92/x
  3. Step 3: Cross multiply
    32,874.80x = 45,368.80 × 20,123.92
  4. Step 4: Simplify right side
    32,874.80x = 912,998,101.70
  5. Step 5: Solve for x
    x = 912,998,101.70/32,874.80
  6. Step 6: Final answer
    x = 27,771.97

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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.