Home / 20,759.49-31,139.24-5,177.12

Finding the Fourth Proportional to 20,759.49, 31,139.24 and 5,177.12

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Solution

The fourth proportional to 20,759.49, 31,139.24 and 5,177.12 is: 7,765.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.49 : 31,139.24 = 5,177.12 : x
  2. Step 2: Convert to fraction form
    20,759.49/31,139.24 = 5,177.12/x
  3. Step 3: Cross multiply
    20,759.49x = 31,139.24 × 5,177.12
  4. Step 4: Simplify right side
    20,759.49x = 161,211,400.61
  5. Step 5: Solve for x
    x = 161,211,400.61/20,759.49
  6. Step 6: Final answer
    x = 7,765.67

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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.