Home / 20,189.19-30,288.85-11,876.16

Finding the Fourth Proportional to 20,189.19, 30,288.85 and 11,876.16

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Solution

The fourth proportional to 20,189.19, 30,288.85 and 11,876.16 is: 17,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.19 : 30,288.85 = 11,876.16 : x
  2. Step 2: Convert to fraction form
    20,189.19/30,288.85 = 11,876.16/x
  3. Step 3: Cross multiply
    20,189.19x = 30,288.85 × 11,876.16
  4. Step 4: Simplify right side
    20,189.19x = 359,715,199.13
  5. Step 5: Solve for x
    x = 359,715,199.13/20,189.19
  6. Step 6: Final answer
    x = 17,817.22

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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.