Home / 12,178.68-18,246.54-8,663.46

Finding the Fourth Proportional to 12,178.68, 18,246.54 and 8,663.46

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Solution

The fourth proportional to 12,178.68, 18,246.54 and 8,663.46 is: 12,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.68 : 18,246.54 = 8,663.46 : x
  2. Step 2: Convert to fraction form
    12,178.68/18,246.54 = 8,663.46/x
  3. Step 3: Cross multiply
    12,178.68x = 18,246.54 × 8,663.46
  4. Step 4: Simplify right side
    12,178.68x = 158,078,169.43
  5. Step 5: Solve for x
    x = 158,078,169.43/12,178.68
  6. Step 6: Final answer
    x = 12,979.91

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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.