Home / 15,156.48-20,915.76-8,442.12

Finding the Fourth Proportional to 15,156.48, 20,915.76 and 8,442.12

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Solution

The fourth proportional to 15,156.48, 20,915.76 and 8,442.12 is: 11,650.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,156.48 : 20,915.76 = 8,442.12 : x
  2. Step 2: Convert to fraction form
    15,156.48/20,915.76 = 8,442.12/x
  3. Step 3: Cross multiply
    15,156.48x = 20,915.76 × 8,442.12
  4. Step 4: Simplify right side
    15,156.48x = 176,573,355.81
  5. Step 5: Solve for x
    x = 176,573,355.81/15,156.48
  6. Step 6: Final answer
    x = 11,650.02

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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.