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Finding the Fourth Proportional to 29,659.80, 40,940.88 and 18,337.98

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Solution

The fourth proportional to 29,659.80, 40,940.88 and 18,337.98 is: 25,312.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,659.80 : 40,940.88 = 18,337.98 : x
  2. Step 2: Convert to fraction form
    29,659.80/40,940.88 = 18,337.98/x
  3. Step 3: Cross multiply
    29,659.80x = 40,940.88 × 18,337.98
  4. Step 4: Simplify right side
    29,659.80x = 750,773,038.62
  5. Step 5: Solve for x
    x = 750,773,038.62/29,659.80
  6. Step 6: Final answer
    x = 25,312.82

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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.