Home / 22,230.42-30,680.64-12,798.78

Finding the Fourth Proportional to 22,230.42, 30,680.64 and 12,798.78

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Solution

The fourth proportional to 22,230.42, 30,680.64 and 12,798.78 is: 17,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,230.42 : 30,680.64 = 12,798.78 : x
  2. Step 2: Convert to fraction form
    22,230.42/30,680.64 = 12,798.78/x
  3. Step 3: Cross multiply
    22,230.42x = 30,680.64 × 12,798.78
  4. Step 4: Simplify right side
    22,230.42x = 392,674,761.62
  5. Step 5: Solve for x
    x = 392,674,761.62/22,230.42
  6. Step 6: Final answer
    x = 17,663.85

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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.