Home / 21,062.19-29,031.81-18,329.73

Finding the Fourth Proportional to 21,062.19, 29,031.81 and 18,329.73

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Solution

The fourth proportional to 21,062.19, 29,031.81 and 18,329.73 is: 25,265.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062.19 : 29,031.81 = 18,329.73 : x
  2. Step 2: Convert to fraction form
    21,062.19/29,031.81 = 18,329.73/x
  3. Step 3: Cross multiply
    21,062.19x = 29,031.81 × 18,329.73
  4. Step 4: Simplify right side
    21,062.19x = 532,145,238.71
  5. Step 5: Solve for x
    x = 532,145,238.71/21,062.19
  6. Step 6: Final answer
    x = 25,265.43

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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.