Home / 20,486.92-28,272.50-11,534.76

Finding the Fourth Proportional to 20,486.92, 28,272.50 and 11,534.76

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Solution

The fourth proportional to 20,486.92, 28,272.50 and 11,534.76 is: 15,918.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.92 : 28,272.50 = 11,534.76 : x
  2. Step 2: Convert to fraction form
    20,486.92/28,272.50 = 11,534.76/x
  3. Step 3: Cross multiply
    20,486.92x = 28,272.50 × 11,534.76
  4. Step 4: Simplify right side
    20,486.92x = 326,116,502.10
  5. Step 5: Solve for x
    x = 326,116,502.10/20,486.92
  6. Step 6: Final answer
    x = 15,918.28

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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.