Home / 20,684.74-28,545.06-11,253.28

Finding the Fourth Proportional to 20,684.74, 28,545.06 and 11,253.28

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Solution

The fourth proportional to 20,684.74, 28,545.06 and 11,253.28 is: 15,529.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,684.74 : 28,545.06 = 11,253.28 : x
  2. Step 2: Convert to fraction form
    20,684.74/28,545.06 = 11,253.28/x
  3. Step 3: Cross multiply
    20,684.74x = 28,545.06 × 11,253.28
  4. Step 4: Simplify right side
    20,684.74x = 321,225,552.80
  5. Step 5: Solve for x
    x = 321,225,552.80/20,684.74
  6. Step 6: Final answer
    x = 15,529.59

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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.