Home / 21,158.20-29,197.02-11,726.56

Finding the Fourth Proportional to 21,158.20, 29,197.02 and 11,726.56

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Solution

The fourth proportional to 21,158.20, 29,197.02 and 11,726.56 is: 16,181.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.20 : 29,197.02 = 11,726.56 : x
  2. Step 2: Convert to fraction form
    21,158.20/29,197.02 = 11,726.56/x
  3. Step 3: Cross multiply
    21,158.20x = 29,197.02 × 11,726.56
  4. Step 4: Simplify right side
    21,158.20x = 342,380,606.85
  5. Step 5: Solve for x
    x = 342,380,606.85/21,158.20
  6. Step 6: Final answer
    x = 16,181.93

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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.