Home / 20,231.24-30,354.12-9,129.47

Finding the Fourth Proportional to 20,231.24, 30,354.12 and 9,129.47

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Solution

The fourth proportional to 20,231.24, 30,354.12 and 9,129.47 is: 13,697.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.24 : 30,354.12 = 9,129.47 : x
  2. Step 2: Convert to fraction form
    20,231.24/30,354.12 = 9,129.47/x
  3. Step 3: Cross multiply
    20,231.24x = 30,354.12 × 9,129.47
  4. Step 4: Simplify right side
    20,231.24x = 277,116,876.15
  5. Step 5: Solve for x
    x = 277,116,876.15/20,231.24
  6. Step 6: Final answer
    x = 13,697.48

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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.