Home / 31,375.65-47,062.83-12,655.29

Finding the Fourth Proportional to 31,375.65, 47,062.83 and 12,655.29

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Solution

The fourth proportional to 31,375.65, 47,062.83 and 12,655.29 is: 18,982.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,375.65 : 47,062.83 = 12,655.29 : x
  2. Step 2: Convert to fraction form
    31,375.65/47,062.83 = 12,655.29/x
  3. Step 3: Cross multiply
    31,375.65x = 47,062.83 × 12,655.29
  4. Step 4: Simplify right side
    31,375.65x = 595,593,761.87
  5. Step 5: Solve for x
    x = 595,593,761.87/31,375.65
  6. Step 6: Final answer
    x = 18,982.67

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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.