Home / 20,686.61-28,548.17-11,734.49

Finding the Fourth Proportional to 20,686.61, 28,548.17 and 11,734.49

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Solution

The fourth proportional to 20,686.61, 28,548.17 and 11,734.49 is: 16,193.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,686.61 : 28,548.17 = 11,734.49 : x
  2. Step 2: Convert to fraction form
    20,686.61/28,548.17 = 11,734.49/x
  3. Step 3: Cross multiply
    20,686.61x = 28,548.17 × 11,734.49
  4. Step 4: Simplify right side
    20,686.61x = 334,998,215.38
  5. Step 5: Solve for x
    x = 334,998,215.38/20,686.61
  6. Step 6: Final answer
    x = 16,193.96

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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.