Home / 21,260.55-31,871.14-9,408.04

Finding the Fourth Proportional to 21,260.55, 31,871.14 and 9,408.04

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Solution

The fourth proportional to 21,260.55, 31,871.14 and 9,408.04 is: 14,103.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.55 : 31,871.14 = 9,408.04 : x
  2. Step 2: Convert to fraction form
    21,260.55/31,871.14 = 9,408.04/x
  3. Step 3: Cross multiply
    21,260.55x = 31,871.14 × 9,408.04
  4. Step 4: Simplify right side
    21,260.55x = 299,844,959.97
  5. Step 5: Solve for x
    x = 299,844,959.97/21,260.55
  6. Step 6: Final answer
    x = 14,103.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.