Home / 20,458.26-28,246.59-15,753.78

Finding the Fourth Proportional to 20,458.26, 28,246.59 and 15,753.78

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Solution

The fourth proportional to 20,458.26, 28,246.59 and 15,753.78 is: 21,751.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,458.26 : 28,246.59 = 15,753.78 : x
  2. Step 2: Convert to fraction form
    20,458.26/28,246.59 = 15,753.78/x
  3. Step 3: Cross multiply
    20,458.26x = 28,246.59 × 15,753.78
  4. Step 4: Simplify right side
    20,458.26x = 444,990,564.61
  5. Step 5: Solve for x
    x = 444,990,564.61/20,458.26
  6. Step 6: Final answer
    x = 21,751.14

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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.