Home / 22,390.20-30,885.84-12,957.48

Finding the Fourth Proportional to 22,390.20, 30,885.84 and 12,957.48

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Solution

The fourth proportional to 22,390.20, 30,885.84 and 12,957.48 is: 17,874.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,390.20 : 30,885.84 = 12,957.48 : x
  2. Step 2: Convert to fraction form
    22,390.20/30,885.84 = 12,957.48/x
  3. Step 3: Cross multiply
    22,390.20x = 30,885.84 × 12,957.48
  4. Step 4: Simplify right side
    22,390.20x = 400,202,654.08
  5. Step 5: Solve for x
    x = 400,202,654.08/22,390.20
  6. Step 6: Final answer
    x = 17,874.01

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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.