Home / 21,158.74-29,185.84-13,614.90

Finding the Fourth Proportional to 21,158.74, 29,185.84 and 13,614.90

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Solution

The fourth proportional to 21,158.74, 29,185.84 and 13,614.90 is: 18,780.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.74 : 29,185.84 = 13,614.90 : x
  2. Step 2: Convert to fraction form
    21,158.74/29,185.84 = 13,614.90/x
  3. Step 3: Cross multiply
    21,158.74x = 29,185.84 × 13,614.90
  4. Step 4: Simplify right side
    21,158.74x = 397,362,293.02
  5. Step 5: Solve for x
    x = 397,362,293.02/21,158.74
  6. Step 6: Final answer
    x = 18,780.05

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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.