Home / 10,220.72-15,335.40-4,380.08

Finding the Fourth Proportional to 10,220.72, 15,335.40 and 4,380.08

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Solution

The fourth proportional to 10,220.72, 15,335.40 and 4,380.08 is: 6,571.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.72 : 15,335.40 = 4,380.08 : x
  2. Step 2: Convert to fraction form
    10,220.72/15,335.40 = 4,380.08/x
  3. Step 3: Cross multiply
    10,220.72x = 15,335.40 × 4,380.08
  4. Step 4: Simplify right side
    10,220.72x = 67,170,278.83
  5. Step 5: Solve for x
    x = 67,170,278.83/10,220.72
  6. Step 6: Final answer
    x = 6,571.97

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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.