Home / 15,157.24-20,916.90-8,442.52

Finding the Fourth Proportional to 15,157.24, 20,916.90 and 8,442.52

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Solution

The fourth proportional to 15,157.24, 20,916.90 and 8,442.52 is: 11,650.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,157.24 : 20,916.90 = 8,442.52 : x
  2. Step 2: Convert to fraction form
    15,157.24/20,916.90 = 8,442.52/x
  3. Step 3: Cross multiply
    15,157.24x = 20,916.90 × 8,442.52
  4. Step 4: Simplify right side
    15,157.24x = 176,591,346.59
  5. Step 5: Solve for x
    x = 176,591,346.59/15,157.24
  6. Step 6: Final answer
    x = 11,650.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.