Home / 20,189.49-27,865.17-12,238.53

Finding the Fourth Proportional to 20,189.49, 27,865.17 and 12,238.53

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Solution

The fourth proportional to 20,189.49, 27,865.17 and 12,238.53 is: 16,891.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,189.49 : 27,865.17 = 12,238.53 : x
  2. Step 2: Convert to fraction form
    20,189.49/27,865.17 = 12,238.53/x
  3. Step 3: Cross multiply
    20,189.49x = 27,865.17 × 12,238.53
  4. Step 4: Simplify right side
    20,189.49x = 341,028,657.81
  5. Step 5: Solve for x
    x = 341,028,657.81/20,189.49
  6. Step 6: Final answer
    x = 16,891.40

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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.