Home / 22,892.20-31,590.30-12,820.48

Finding the Fourth Proportional to 22,892.20, 31,590.30 and 12,820.48

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Solution

The fourth proportional to 22,892.20, 31,590.30 and 12,820.48 is: 17,691.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,892.20 : 31,590.30 = 12,820.48 : x
  2. Step 2: Convert to fraction form
    22,892.20/31,590.30 = 12,820.48/x
  3. Step 3: Cross multiply
    22,892.20x = 31,590.30 × 12,820.48
  4. Step 4: Simplify right side
    22,892.20x = 405,002,809.34
  5. Step 5: Solve for x
    x = 405,002,809.34/22,892.20
  6. Step 6: Final answer
    x = 17,691.74

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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.