Home / 31,440.50-43,385.95-18,008.67

Finding the Fourth Proportional to 31,440.50, 43,385.95 and 18,008.67

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Solution

The fourth proportional to 31,440.50, 43,385.95 and 18,008.67 is: 24,850.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,440.50 : 43,385.95 = 18,008.67 : x
  2. Step 2: Convert to fraction form
    31,440.50/43,385.95 = 18,008.67/x
  3. Step 3: Cross multiply
    31,440.50x = 43,385.95 × 18,008.67
  4. Step 4: Simplify right side
    31,440.50x = 781,323,211.16
  5. Step 5: Solve for x
    x = 781,323,211.16/31,440.50
  6. Step 6: Final answer
    x = 24,850.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.