Home / 20,947.55-31,421.33-6,156.47

Finding the Fourth Proportional to 20,947.55, 31,421.33 and 6,156.47

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Solution

The fourth proportional to 20,947.55, 31,421.33 and 6,156.47 is: 9,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,947.55 : 31,421.33 = 6,156.47 : x
  2. Step 2: Convert to fraction form
    20,947.55/31,421.33 = 6,156.47/x
  3. Step 3: Cross multiply
    20,947.55x = 31,421.33 × 6,156.47
  4. Step 4: Simplify right side
    20,947.55x = 193,444,287.62
  5. Step 5: Solve for x
    x = 193,444,287.62/20,947.55
  6. Step 6: Final answer
    x = 9,234.70

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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.