Home / 20,696.17-28,560.67-11,264.71

Finding the Fourth Proportional to 20,696.17, 28,560.67 and 11,264.71

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Solution

The fourth proportional to 20,696.17, 28,560.67 and 11,264.71 is: 15,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,696.17 : 28,560.67 = 11,264.71 : x
  2. Step 2: Convert to fraction form
    20,696.17/28,560.67 = 11,264.71/x
  3. Step 3: Cross multiply
    20,696.17x = 28,560.67 × 11,264.71
  4. Step 4: Simplify right side
    20,696.17x = 321,727,664.96
  5. Step 5: Solve for x
    x = 321,727,664.96/20,696.17
  6. Step 6: Final answer
    x = 15,545.28

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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.