Home / 31,819.24-47,728.80-8,126.76

Finding the Fourth Proportional to 31,819.24, 47,728.80 and 8,126.76

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Solution

The fourth proportional to 31,819.24, 47,728.80 and 8,126.76 is: 12,190.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,819.24 : 47,728.80 = 8,126.76 : x
  2. Step 2: Convert to fraction form
    31,819.24/47,728.80 = 8,126.76/x
  3. Step 3: Cross multiply
    31,819.24x = 47,728.80 × 8,126.76
  4. Step 4: Simplify right side
    31,819.24x = 387,880,502.69
  5. Step 5: Solve for x
    x = 387,880,502.69/31,819.24
  6. Step 6: Final answer
    x = 12,190.12

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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.