Home / 31,832.48-47,723.76-20,121.12

Finding the Fourth Proportional to 31,832.48, 47,723.76 and 20,121.12

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Solution

The fourth proportional to 31,832.48, 47,723.76 and 20,121.12 is: 30,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,832.48 : 47,723.76 = 20,121.12 : x
  2. Step 2: Convert to fraction form
    31,832.48/47,723.76 = 20,121.12/x
  3. Step 3: Cross multiply
    31,832.48x = 47,723.76 × 20,121.12
  4. Step 4: Simplify right side
    31,832.48x = 960,255,501.81
  5. Step 5: Solve for x
    x = 960,255,501.81/31,832.48
  6. Step 6: Final answer
    x = 30,165.90

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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.