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Finding the Fourth Proportional to 32,602.82, 45,019.47 and 20,687.30

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Solution

The fourth proportional to 32,602.82, 45,019.47 and 20,687.30 is: 28,565.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,602.82 : 45,019.47 = 20,687.30 : x
  2. Step 2: Convert to fraction form
    32,602.82/45,019.47 = 20,687.30/x
  3. Step 3: Cross multiply
    32,602.82x = 45,019.47 × 20,687.30
  4. Step 4: Simplify right side
    32,602.82x = 931,331,281.73
  5. Step 5: Solve for x
    x = 931,331,281.73/32,602.82
  6. Step 6: Final answer
    x = 28,565.97

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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.