Home / 22,290.31-30,760.45-12,218.64

Finding the Fourth Proportional to 22,290.31, 30,760.45 and 12,218.64

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Solution

The fourth proportional to 22,290.31, 30,760.45 and 12,218.64 is: 16,861.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,290.31 : 30,760.45 = 12,218.64 : x
  2. Step 2: Convert to fraction form
    22,290.31/30,760.45 = 12,218.64/x
  3. Step 3: Cross multiply
    22,290.31x = 30,760.45 × 12,218.64
  4. Step 4: Simplify right side
    22,290.31x = 375,850,864.79
  5. Step 5: Solve for x
    x = 375,850,864.79/22,290.31
  6. Step 6: Final answer
    x = 16,861.63

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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.