Home / 20,488.06-28,273.08-11,989.18

Finding the Fourth Proportional to 20,488.06, 28,273.08 and 11,989.18

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Solution

The fourth proportional to 20,488.06, 28,273.08 and 11,989.18 is: 16,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,488.06 : 28,273.08 = 11,989.18 : x
  2. Step 2: Convert to fraction form
    20,488.06/28,273.08 = 11,989.18/x
  3. Step 3: Cross multiply
    20,488.06x = 28,273.08 × 11,989.18
  4. Step 4: Simplify right side
    20,488.06x = 338,971,045.27
  5. Step 5: Solve for x
    x = 338,971,045.27/20,488.06
  6. Step 6: Final answer
    x = 16,544.81

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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.