Home / 10,391.08-15,575.10-5,185.48

Finding the Fourth Proportional to 10,391.08, 15,575.10 and 5,185.48

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Solution

The fourth proportional to 10,391.08, 15,575.10 and 5,185.48 is: 7,772.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.08 : 15,575.10 = 5,185.48 : x
  2. Step 2: Convert to fraction form
    10,391.08/15,575.10 = 5,185.48/x
  3. Step 3: Cross multiply
    10,391.08x = 15,575.10 × 5,185.48
  4. Step 4: Simplify right side
    10,391.08x = 80,764,369.55
  5. Step 5: Solve for x
    x = 80,764,369.55/10,391.08
  6. Step 6: Final answer
    x = 7,772.47

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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.