Home / 22,388.15-30,892.20-12,954.89

Finding the Fourth Proportional to 22,388.15, 30,892.20 and 12,954.89

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Solution

The fourth proportional to 22,388.15, 30,892.20 and 12,954.89 is: 17,875.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,388.15 : 30,892.20 = 12,954.89 : x
  2. Step 2: Convert to fraction form
    22,388.15/30,892.20 = 12,954.89/x
  3. Step 3: Cross multiply
    22,388.15x = 30,892.20 × 12,954.89
  4. Step 4: Simplify right side
    22,388.15x = 400,205,052.86
  5. Step 5: Solve for x
    x = 400,205,052.86/22,388.15
  6. Step 6: Final answer
    x = 17,875.75

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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.