Home / 15,153.28-20,911.44-8,865.52

Finding the Fourth Proportional to 15,153.28, 20,911.44 and 8,865.52

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Solution

The fourth proportional to 15,153.28, 20,911.44 and 8,865.52 is: 12,234.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,153.28 : 20,911.44 = 8,865.52 : x
  2. Step 2: Convert to fraction form
    15,153.28/20,911.44 = 8,865.52/x
  3. Step 3: Cross multiply
    15,153.28x = 20,911.44 × 8,865.52
  4. Step 4: Simplify right side
    15,153.28x = 185,390,789.55
  5. Step 5: Solve for x
    x = 185,390,789.55/15,153.28
  6. Step 6: Final answer
    x = 12,234.37

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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.