Home / 21,729.66-29,987.39-13,232.14

Finding the Fourth Proportional to 21,729.66, 29,987.39 and 13,232.14

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Solution

The fourth proportional to 21,729.66, 29,987.39 and 13,232.14 is: 18,260.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,729.66 : 29,987.39 = 13,232.14 : x
  2. Step 2: Convert to fraction form
    21,729.66/29,987.39 = 13,232.14/x
  3. Step 3: Cross multiply
    21,729.66x = 29,987.39 × 13,232.14
  4. Step 4: Simplify right side
    21,729.66x = 396,797,342.71
  5. Step 5: Solve for x
    x = 396,797,342.71/21,729.66
  6. Step 6: Final answer
    x = 18,260.63

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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.