Home / 20,659.29-28,508.72-11,706.90

Finding the Fourth Proportional to 20,659.29, 28,508.72 and 11,706.90

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Solution

The fourth proportional to 20,659.29, 28,508.72 and 11,706.90 is: 16,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,659.29 : 28,508.72 = 11,706.90 : x
  2. Step 2: Convert to fraction form
    20,659.29/28,508.72 = 11,706.90/x
  3. Step 3: Cross multiply
    20,659.29x = 28,508.72 × 11,706.90
  4. Step 4: Simplify right side
    20,659.29x = 333,748,734.17
  5. Step 5: Solve for x
    x = 333,748,734.17/20,659.29
  6. Step 6: Final answer
    x = 16,154.90

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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.