Home / 20,765.28-31,148.16-5,183.04

Finding the Fourth Proportional to 20,765.28, 31,148.16 and 5,183.04

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Solution

The fourth proportional to 20,765.28, 31,148.16 and 5,183.04 is: 7,774.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.28 : 31,148.16 = 5,183.04 : x
  2. Step 2: Convert to fraction form
    20,765.28/31,148.16 = 5,183.04/x
  3. Step 3: Cross multiply
    20,765.28x = 31,148.16 × 5,183.04
  4. Step 4: Simplify right side
    20,765.28x = 161,442,159.21
  5. Step 5: Solve for x
    x = 161,442,159.21/20,765.28
  6. Step 6: Final answer
    x = 7,774.62

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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.