Home / 20,967.05-28,932.76-12,351.86

Finding the Fourth Proportional to 20,967.05, 28,932.76 and 12,351.86

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Solution

The fourth proportional to 20,967.05, 28,932.76 and 12,351.86 is: 17,044.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.05 : 28,932.76 = 12,351.86 : x
  2. Step 2: Convert to fraction form
    20,967.05/28,932.76 = 12,351.86/x
  3. Step 3: Cross multiply
    20,967.05x = 28,932.76 × 12,351.86
  4. Step 4: Simplify right side
    20,967.05x = 357,373,380.21
  5. Step 5: Solve for x
    x = 357,373,380.21/20,967.05
  6. Step 6: Final answer
    x = 17,044.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.