Home / 43,080.75-64,621.15-13,500.90

Finding the Fourth Proportional to 43,080.75, 64,621.15 and 13,500.90

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Solution

The fourth proportional to 43,080.75, 64,621.15 and 13,500.90 is: 20,251.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,080.75 : 64,621.15 = 13,500.90 : x
  2. Step 2: Convert to fraction form
    43,080.75/64,621.15 = 13,500.90/x
  3. Step 3: Cross multiply
    43,080.75x = 64,621.15 × 13,500.90
  4. Step 4: Simplify right side
    43,080.75x = 872,443,293.42
  5. Step 5: Solve for x
    x = 872,443,293.42/43,080.75
  6. Step 6: Final answer
    x = 20,251.35

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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.