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Finding the Fourth Proportional to 29,159.80, 43,739.70 and 10,689.40

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Solution

The fourth proportional to 29,159.80, 43,739.70 and 10,689.40 is: 16,034.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,159.80 : 43,739.70 = 10,689.40 : x
  2. Step 2: Convert to fraction form
    29,159.80/43,739.70 = 10,689.40/x
  3. Step 3: Cross multiply
    29,159.80x = 43,739.70 × 10,689.40
  4. Step 4: Simplify right side
    29,159.80x = 467,551,149.18
  5. Step 5: Solve for x
    x = 467,551,149.18/29,159.80
  6. Step 6: Final answer
    x = 16,034.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.