Home / 20,723.44-31,078.98-7,572.76

Finding the Fourth Proportional to 20,723.44, 31,078.98 and 7,572.76

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Solution

The fourth proportional to 20,723.44, 31,078.98 and 7,572.76 is: 11,356.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,723.44 : 31,078.98 = 7,572.76 : x
  2. Step 2: Convert to fraction form
    20,723.44/31,078.98 = 7,572.76/x
  3. Step 3: Cross multiply
    20,723.44x = 31,078.98 × 7,572.76
  4. Step 4: Simplify right side
    20,723.44x = 235,353,656.58
  5. Step 5: Solve for x
    x = 235,353,656.58/20,723.44
  6. Step 6: Final answer
    x = 11,356.88

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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.