Home / 22,456.97-30,990.26-12,897.06

Finding the Fourth Proportional to 22,456.97, 30,990.26 and 12,897.06

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Solution

The fourth proportional to 22,456.97, 30,990.26 and 12,897.06 is: 17,797.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,456.97 : 30,990.26 = 12,897.06 : x
  2. Step 2: Convert to fraction form
    22,456.97/30,990.26 = 12,897.06/x
  3. Step 3: Cross multiply
    22,456.97x = 30,990.26 × 12,897.06
  4. Step 4: Simplify right side
    22,456.97x = 399,683,178.15
  5. Step 5: Solve for x
    x = 399,683,178.15/22,456.97
  6. Step 6: Final answer
    x = 17,797.73

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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.