Home / 21,691.04-29,922.06-13,195.76

Finding the Fourth Proportional to 21,691.04, 29,922.06 and 13,195.76

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Solution

The fourth proportional to 21,691.04, 29,922.06 and 13,195.76 is: 18,203.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,691.04 : 29,922.06 = 13,195.76 : x
  2. Step 2: Convert to fraction form
    21,691.04/29,922.06 = 13,195.76/x
  3. Step 3: Cross multiply
    21,691.04x = 29,922.06 × 13,195.76
  4. Step 4: Simplify right side
    21,691.04x = 394,844,322.47
  5. Step 5: Solve for x
    x = 394,844,322.47/21,691.04
  6. Step 6: Final answer
    x = 18,203.11

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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.