Home / 21,154.28-31,726.94-13,352.68

Finding the Fourth Proportional to 21,154.28, 31,726.94 and 13,352.68

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Solution

The fourth proportional to 21,154.28, 31,726.94 and 13,352.68 is: 20,026.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,154.28 : 31,726.94 = 13,352.68 : x
  2. Step 2: Convert to fraction form
    21,154.28/31,726.94 = 13,352.68/x
  3. Step 3: Cross multiply
    21,154.28x = 31,726.94 × 13,352.68
  4. Step 4: Simplify right side
    21,154.28x = 423,639,677.20
  5. Step 5: Solve for x
    x = 423,639,677.20/21,154.28
  6. Step 6: Final answer
    x = 20,026.19

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1.5x scale

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.