Home / 10,148.75-15,221.10-3,575.20

Finding the Fourth Proportional to 10,148.75, 15,221.10 and 3,575.20

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Solution

The fourth proportional to 10,148.75, 15,221.10 and 3,575.20 is: 5,362.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,148.75 : 15,221.10 = 3,575.20 : x
  2. Step 2: Convert to fraction form
    10,148.75/15,221.10 = 3,575.20/x
  3. Step 3: Cross multiply
    10,148.75x = 15,221.10 × 3,575.20
  4. Step 4: Simplify right side
    10,148.75x = 54,418,400.61
  5. Step 5: Solve for x
    x = 54,418,400.61/10,148.75
  6. Step 6: Final answer
    x = 5,362.08

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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.