Home / 10,480.39-15,722.40-4,240.15

Finding the Fourth Proportional to 10,480.39, 15,722.40 and 4,240.15

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Solution

The fourth proportional to 10,480.39, 15,722.40 and 4,240.15 is: 6,360.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,480.39 : 15,722.40 = 4,240.15 : x
  2. Step 2: Convert to fraction form
    10,480.39/15,722.40 = 4,240.15/x
  3. Step 3: Cross multiply
    10,480.39x = 15,722.40 × 4,240.15
  4. Step 4: Simplify right side
    10,480.39x = 66,665,310.95
  5. Step 5: Solve for x
    x = 66,665,310.95/10,480.39
  6. Step 6: Final answer
    x = 6,360.96

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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.