Home / 21,648.22-29,853.84-13,151.74

Finding the Fourth Proportional to 21,648.22, 29,853.84 and 13,151.74

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Solution

The fourth proportional to 21,648.22, 29,853.84 and 13,151.74 is: 18,136.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.22 : 29,853.84 = 13,151.74 : x
  2. Step 2: Convert to fraction form
    21,648.22/29,853.84 = 13,151.74/x
  3. Step 3: Cross multiply
    21,648.22x = 29,853.84 × 13,151.74
  4. Step 4: Simplify right side
    21,648.22x = 392,629,941.68
  5. Step 5: Solve for x
    x = 392,629,941.68/21,648.22
  6. Step 6: Final answer
    x = 18,136.82

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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.