Home / 21,551.22-29,732.22-15,899.58

Finding the Fourth Proportional to 21,551.22, 29,732.22 and 15,899.58

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Solution

The fourth proportional to 21,551.22, 29,732.22 and 15,899.58 is: 21,935.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,551.22 : 29,732.22 = 15,899.58 : x
  2. Step 2: Convert to fraction form
    21,551.22/29,732.22 = 15,899.58/x
  3. Step 3: Cross multiply
    21,551.22x = 29,732.22 × 15,899.58
  4. Step 4: Simplify right side
    21,551.22x = 472,729,810.47
  5. Step 5: Solve for x
    x = 472,729,810.47/21,551.22
  6. Step 6: Final answer
    x = 21,935.18

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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.