Home / 31,452.40-47,139.72-15,861.52

Finding the Fourth Proportional to 31,452.40, 47,139.72 and 15,861.52

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Solution

The fourth proportional to 31,452.40, 47,139.72 and 15,861.52 is: 23,772.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,452.40 : 47,139.72 = 15,861.52 : x
  2. Step 2: Convert to fraction form
    31,452.40/47,139.72 = 15,861.52/x
  3. Step 3: Cross multiply
    31,452.40x = 47,139.72 × 15,861.52
  4. Step 4: Simplify right side
    31,452.40x = 747,707,611.57
  5. Step 5: Solve for x
    x = 747,707,611.57/31,452.40
  6. Step 6: Final answer
    x = 23,772.67

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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.