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Finding the Fourth Proportional to 29,135.80, 43,703.70 and 13,340.80

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Solution

The fourth proportional to 29,135.80, 43,703.70 and 13,340.80 is: 20,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,135.80 : 43,703.70 = 13,340.80 : x
  2. Step 2: Convert to fraction form
    29,135.80/43,703.70 = 13,340.80/x
  3. Step 3: Cross multiply
    29,135.80x = 43,703.70 × 13,340.80
  4. Step 4: Simplify right side
    29,135.80x = 583,042,320.96
  5. Step 5: Solve for x
    x = 583,042,320.96/29,135.80
  6. Step 6: Final answer
    x = 20,011.20

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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.