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Finding the Fourth Proportional to 28,507.38, 42,761.07 and 7,730.34

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Solution

The fourth proportional to 28,507.38, 42,761.07 and 7,730.34 is: 11,595.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,507.38 : 42,761.07 = 7,730.34 : x
  2. Step 2: Convert to fraction form
    28,507.38/42,761.07 = 7,730.34/x
  3. Step 3: Cross multiply
    28,507.38x = 42,761.07 × 7,730.34
  4. Step 4: Simplify right side
    28,507.38x = 330,557,609.86
  5. Step 5: Solve for x
    x = 330,557,609.86/28,507.38
  6. Step 6: Final answer
    x = 11,595.51

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Similar ratio
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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.