Home / 13,514.92-18,642.81-8,133.61

Finding the Fourth Proportional to 13,514.92, 18,642.81 and 8,133.61

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Solution

The fourth proportional to 13,514.92, 18,642.81 and 8,133.61 is: 11,219.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,514.92 : 18,642.81 = 8,133.61 : x
  2. Step 2: Convert to fraction form
    13,514.92/18,642.81 = 8,133.61/x
  3. Step 3: Cross multiply
    13,514.92x = 18,642.81 × 8,133.61
  4. Step 4: Simplify right side
    13,514.92x = 151,633,345.84
  5. Step 5: Solve for x
    x = 151,633,345.84/13,514.92
  6. Step 6: Final answer
    x = 11,219.70

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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.