Home / 12,818.66-19,237.71-8,648.78

Finding the Fourth Proportional to 12,818.66, 19,237.71 and 8,648.78

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Solution

The fourth proportional to 12,818.66, 19,237.71 and 8,648.78 is: 12,979.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,818.66 : 19,237.71 = 8,648.78 : x
  2. Step 2: Convert to fraction form
    12,818.66/19,237.71 = 8,648.78/x
  3. Step 3: Cross multiply
    12,818.66x = 19,237.71 × 8,648.78
  4. Step 4: Simplify right side
    12,818.66x = 166,382,721.49
  5. Step 5: Solve for x
    x = 166,382,721.49/12,818.66
  6. Step 6: Final answer
    x = 12,979.73

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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.