Home / 31,685.05-47,525.10-8,310.88

Finding the Fourth Proportional to 31,685.05, 47,525.10 and 8,310.88

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Solution

The fourth proportional to 31,685.05, 47,525.10 and 8,310.88 is: 12,465.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,685.05 : 47,525.10 = 8,310.88 : x
  2. Step 2: Convert to fraction form
    31,685.05/47,525.10 = 8,310.88/x
  3. Step 3: Cross multiply
    31,685.05x = 47,525.10 × 8,310.88
  4. Step 4: Simplify right side
    31,685.05x = 394,975,403.09
  5. Step 5: Solve for x
    x = 394,975,403.09/31,685.05
  6. Step 6: Final answer
    x = 12,465.67

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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.