Home / 20,484.12-28,262.43-11,531.10

Finding the Fourth Proportional to 20,484.12, 28,262.43 and 11,531.10

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Solution

The fourth proportional to 20,484.12, 28,262.43 and 11,531.10 is: 15,909.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.12 : 28,262.43 = 11,531.10 : x
  2. Step 2: Convert to fraction form
    20,484.12/28,262.43 = 11,531.10/x
  3. Step 3: Cross multiply
    20,484.12x = 28,262.43 × 11,531.10
  4. Step 4: Simplify right side
    20,484.12x = 325,896,906.57
  5. Step 5: Solve for x
    x = 325,896,906.57/20,484.12
  6. Step 6: Final answer
    x = 15,909.73

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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.