Home / 15,088.13-20,815.91-11,118.71

Finding the Fourth Proportional to 15,088.13, 20,815.91 and 11,118.71

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Solution

The fourth proportional to 15,088.13, 20,815.91 and 11,118.71 is: 15,339.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,088.13 : 20,815.91 = 11,118.71 : x
  2. Step 2: Convert to fraction form
    15,088.13/20,815.91 = 11,118.71/x
  3. Step 3: Cross multiply
    15,088.13x = 20,815.91 × 11,118.71
  4. Step 4: Simplify right side
    15,088.13x = 231,446,011.08
  5. Step 5: Solve for x
    x = 231,446,011.08/15,088.13
  6. Step 6: Final answer
    x = 15,339.61

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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.