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Finding the Fourth Proportional to 29,470.98, 40,672.62 and 18,143.40

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Solution

The fourth proportional to 29,470.98, 40,672.62 and 18,143.40 is: 25,039.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,470.98 : 40,672.62 = 18,143.40 : x
  2. Step 2: Convert to fraction form
    29,470.98/40,672.62 = 18,143.40/x
  3. Step 3: Cross multiply
    29,470.98x = 40,672.62 × 18,143.40
  4. Step 4: Simplify right side
    29,470.98x = 737,939,613.71
  5. Step 5: Solve for x
    x = 737,939,613.71/29,470.98
  6. Step 6: Final answer
    x = 25,039.53

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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.