Home / 21,422.31-29,577.24-13,359.12

Finding the Fourth Proportional to 21,422.31, 29,577.24 and 13,359.12

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Solution

The fourth proportional to 21,422.31, 29,577.24 and 13,359.12 is: 18,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,422.31 : 29,577.24 = 13,359.12 : x
  2. Step 2: Convert to fraction form
    21,422.31/29,577.24 = 13,359.12/x
  3. Step 3: Cross multiply
    21,422.31x = 29,577.24 × 13,359.12
  4. Step 4: Simplify right side
    21,422.31x = 395,125,898.43
  5. Step 5: Solve for x
    x = 395,125,898.43/21,422.31
  6. Step 6: Final answer
    x = 18,444.60

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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.