Home / 21,724.64-29,983.20-13,767.62

Finding the Fourth Proportional to 21,724.64, 29,983.20 and 13,767.62

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Solution

The fourth proportional to 21,724.64, 29,983.20 and 13,767.62 is: 19,001.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.64 : 29,983.20 = 13,767.62 : x
  2. Step 2: Convert to fraction form
    21,724.64/29,983.20 = 13,767.62/x
  3. Step 3: Cross multiply
    21,724.64x = 29,983.20 × 13,767.62
  4. Step 4: Simplify right side
    21,724.64x = 412,797,303.98
  5. Step 5: Solve for x
    x = 412,797,303.98/21,724.64
  6. Step 6: Final answer
    x = 19,001.34

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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.