Home / 31,518.28-47,277.42-7,825.78

Finding the Fourth Proportional to 31,518.28, 47,277.42 and 7,825.78

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Solution

The fourth proportional to 31,518.28, 47,277.42 and 7,825.78 is: 11,738.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.28 : 47,277.42 = 7,825.78 : x
  2. Step 2: Convert to fraction form
    31,518.28/47,277.42 = 7,825.78/x
  3. Step 3: Cross multiply
    31,518.28x = 47,277.42 × 7,825.78
  4. Step 4: Simplify right side
    31,518.28x = 369,982,687.89
  5. Step 5: Solve for x
    x = 369,982,687.89/31,518.28
  6. Step 6: Final answer
    x = 11,738.67

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Similar ratio
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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.