Home / 19,278.24-28,915.20-6,129.60

Finding the Fourth Proportional to 19,278.24, 28,915.20 and 6,129.60

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Solution

The fourth proportional to 19,278.24, 28,915.20 and 6,129.60 is: 9,193.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,278.24 : 28,915.20 = 6,129.60 : x
  2. Step 2: Convert to fraction form
    19,278.24/28,915.20 = 6,129.60/x
  3. Step 3: Cross multiply
    19,278.24x = 28,915.20 × 6,129.60
  4. Step 4: Simplify right side
    19,278.24x = 177,238,609.92
  5. Step 5: Solve for x
    x = 177,238,609.92/19,278.24
  6. Step 6: Final answer
    x = 9,193.71

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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.