Home / 21,454.20-29,577.15-13,491.90

Finding the Fourth Proportional to 21,454.20, 29,577.15 and 13,491.90

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Solution

The fourth proportional to 21,454.20, 29,577.15 and 13,491.90 is: 18,600.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,454.20 : 29,577.15 = 13,491.90 : x
  2. Step 2: Convert to fraction form
    21,454.20/29,577.15 = 13,491.90/x
  3. Step 3: Cross multiply
    21,454.20x = 29,577.15 × 13,491.90
  4. Step 4: Simplify right side
    21,454.20x = 399,051,950.09
  5. Step 5: Solve for x
    x = 399,051,950.09/21,454.20
  6. Step 6: Final answer
    x = 18,600.18

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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.