Home / 22,290.98-30,761.58-12,219.79

Finding the Fourth Proportional to 22,290.98, 30,761.58 and 12,219.79

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Solution

The fourth proportional to 22,290.98, 30,761.58 and 12,219.79 is: 16,863.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,290.98 : 30,761.58 = 12,219.79 : x
  2. Step 2: Convert to fraction form
    22,290.98/30,761.58 = 12,219.79/x
  3. Step 3: Cross multiply
    22,290.98x = 30,761.58 × 12,219.79
  4. Step 4: Simplify right side
    22,290.98x = 375,899,927.61
  5. Step 5: Solve for x
    x = 375,899,927.61/22,290.98
  6. Step 6: Final answer
    x = 16,863.32

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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.