Home / 20,169.71-27,835.55-11,218.80

Finding the Fourth Proportional to 20,169.71, 27,835.55 and 11,218.80

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Solution

The fourth proportional to 20,169.71, 27,835.55 and 11,218.80 is: 15,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,169.71 : 27,835.55 = 11,218.80 : x
  2. Step 2: Convert to fraction form
    20,169.71/27,835.55 = 11,218.80/x
  3. Step 3: Cross multiply
    20,169.71x = 27,835.55 × 11,218.80
  4. Step 4: Simplify right side
    20,169.71x = 312,281,468.34
  5. Step 5: Solve for x
    x = 312,281,468.34/20,169.71
  6. Step 6: Final answer
    x = 15,482.70

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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.