Home / 29,471.18-40,667.12-16,721.78

Finding the Fourth Proportional to 29,471.18, 40,667.12 and 16,721.78

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Solution

The fourth proportional to 29,471.18, 40,667.12 and 16,721.78 is: 23,074.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,471.18 : 40,667.12 = 16,721.78 : x
  2. Step 2: Convert to fraction form
    29,471.18/40,667.12 = 16,721.78/x
  3. Step 3: Cross multiply
    29,471.18x = 40,667.12 × 16,721.78
  4. Step 4: Simplify right side
    29,471.18x = 680,026,633.87
  5. Step 5: Solve for x
    x = 680,026,633.87/29,471.18
  6. Step 6: Final answer
    x = 23,074.29

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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.