Home / 21,217.20-29,252.71-13,256.52

Finding the Fourth Proportional to 21,217.20, 29,252.71 and 13,256.52

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Solution

The fourth proportional to 21,217.20, 29,252.71 and 13,256.52 is: 18,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.20 : 29,252.71 = 13,256.52 : x
  2. Step 2: Convert to fraction form
    21,217.20/29,252.71 = 13,256.52/x
  3. Step 3: Cross multiply
    21,217.20x = 29,252.71 × 13,256.52
  4. Step 4: Simplify right side
    21,217.20x = 387,789,135.17
  5. Step 5: Solve for x
    x = 387,789,135.17/21,217.20
  6. Step 6: Final answer
    x = 18,277.11

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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.