Home / 10,432.80-15,644.08-5,161.72

Finding the Fourth Proportional to 10,432.80, 15,644.08 and 5,161.72

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Solution

The fourth proportional to 10,432.80, 15,644.08 and 5,161.72 is: 7,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,432.80 : 15,644.08 = 5,161.72 : x
  2. Step 2: Convert to fraction form
    10,432.80/15,644.08 = 5,161.72/x
  3. Step 3: Cross multiply
    10,432.80x = 15,644.08 × 5,161.72
  4. Step 4: Simplify right side
    10,432.80x = 80,750,360.62
  5. Step 5: Solve for x
    x = 80,750,360.62/10,432.80
  6. Step 6: Final answer
    x = 7,740.05

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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.