Home / 22,311.17-30,789.65-12,239.63

Finding the Fourth Proportional to 22,311.17, 30,789.65 and 12,239.63

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Solution

The fourth proportional to 22,311.17, 30,789.65 and 12,239.63 is: 16,890.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.17 : 30,789.65 = 12,239.63 : x
  2. Step 2: Convert to fraction form
    22,311.17/30,789.65 = 12,239.63/x
  3. Step 3: Cross multiply
    22,311.17x = 30,789.65 × 12,239.63
  4. Step 4: Simplify right side
    22,311.17x = 376,853,923.83
  5. Step 5: Solve for x
    x = 376,853,923.83/22,311.17
  6. Step 6: Final answer
    x = 16,890.82

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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.