Home / 18,818.46-28,248.12-14,151.78

Finding the Fourth Proportional to 18,818.46, 28,248.12 and 14,151.78

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Solution

The fourth proportional to 18,818.46, 28,248.12 and 14,151.78 is: 21,243.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.46 : 28,248.12 = 14,151.78 : x
  2. Step 2: Convert to fraction form
    18,818.46/28,248.12 = 14,151.78/x
  3. Step 3: Cross multiply
    18,818.46x = 28,248.12 × 14,151.78
  4. Step 4: Simplify right side
    18,818.46x = 399,761,179.65
  5. Step 5: Solve for x
    x = 399,761,179.65/18,818.46
  6. Step 6: Final answer
    x = 21,243.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.