Home / 20,132.32-27,773.50-12,959.66

Finding the Fourth Proportional to 20,132.32, 27,773.50 and 12,959.66

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Solution

The fourth proportional to 20,132.32, 27,773.50 and 12,959.66 is: 17,878.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.32 : 27,773.50 = 12,959.66 : x
  2. Step 2: Convert to fraction form
    20,132.32/27,773.50 = 12,959.66/x
  3. Step 3: Cross multiply
    20,132.32x = 27,773.50 × 12,959.66
  4. Step 4: Simplify right side
    20,132.32x = 359,935,182.26
  5. Step 5: Solve for x
    x = 359,935,182.26/20,132.32
  6. Step 6: Final answer
    x = 17,878.47

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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.