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Finding the Fourth Proportional to 29,474.88, 40,689.24 and 18,870.66

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Solution

The fourth proportional to 29,474.88, 40,689.24 and 18,870.66 is: 26,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,474.88 : 40,689.24 = 18,870.66 : x
  2. Step 2: Convert to fraction form
    29,474.88/40,689.24 = 18,870.66/x
  3. Step 3: Cross multiply
    29,474.88x = 40,689.24 × 18,870.66
  4. Step 4: Simplify right side
    29,474.88x = 767,832,813.70
  5. Step 5: Solve for x
    x = 767,832,813.70/29,474.88
  6. Step 6: Final answer
    x = 26,050.41

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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.