Home / 21,724.56-29,959.80-13,753.20

Finding the Fourth Proportional to 21,724.56, 29,959.80 and 13,753.20

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Solution

The fourth proportional to 21,724.56, 29,959.80 and 13,753.20 is: 18,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.56 : 29,959.80 = 13,753.20 : x
  2. Step 2: Convert to fraction form
    21,724.56/29,959.80 = 13,753.20/x
  3. Step 3: Cross multiply
    21,724.56x = 29,959.80 × 13,753.20
  4. Step 4: Simplify right side
    21,724.56x = 412,043,121.36
  5. Step 5: Solve for x
    x = 412,043,121.36/21,724.56
  6. Step 6: Final answer
    x = 18,966.70

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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.