Home / 21,144.24-31,725.28-9,291.92

Finding the Fourth Proportional to 21,144.24, 31,725.28 and 9,291.92

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Solution

The fourth proportional to 21,144.24, 31,725.28 and 9,291.92 is: 13,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,144.24 : 31,725.28 = 9,291.92 : x
  2. Step 2: Convert to fraction form
    21,144.24/31,725.28 = 9,291.92/x
  3. Step 3: Cross multiply
    21,144.24x = 31,725.28 × 9,291.92
  4. Step 4: Simplify right side
    21,144.24x = 294,788,763.74
  5. Step 5: Solve for x
    x = 294,788,763.74/21,144.24
  6. Step 6: Final answer
    x = 13,941.80

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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.