Home / 31,742.55-47,634.08-15,121.35

Finding the Fourth Proportional to 31,742.55, 47,634.08 and 15,121.35

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Solution

The fourth proportional to 31,742.55, 47,634.08 and 15,121.35 is: 22,691.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.55 : 47,634.08 = 15,121.35 : x
  2. Step 2: Convert to fraction form
    31,742.55/47,634.08 = 15,121.35/x
  3. Step 3: Cross multiply
    31,742.55x = 47,634.08 × 15,121.35
  4. Step 4: Simplify right side
    31,742.55x = 720,291,520.00
  5. Step 5: Solve for x
    x = 720,291,520.00/31,742.55
  6. Step 6: Final answer
    x = 22,691.67

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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.