Home / 10,255.08-15,386.88-4,915.56

Finding the Fourth Proportional to 10,255.08, 15,386.88 and 4,915.56

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Solution

The fourth proportional to 10,255.08, 15,386.88 and 4,915.56 is: 7,375.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.08 : 15,386.88 = 4,915.56 : x
  2. Step 2: Convert to fraction form
    10,255.08/15,386.88 = 4,915.56/x
  3. Step 3: Cross multiply
    10,255.08x = 15,386.88 × 4,915.56
  4. Step 4: Simplify right side
    10,255.08x = 75,635,131.85
  5. Step 5: Solve for x
    x = 75,635,131.85/10,255.08
  6. Step 6: Final answer
    x = 7,375.38

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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.