Home / 20,109.28-27,751.68-13,384.08

Finding the Fourth Proportional to 20,109.28, 27,751.68 and 13,384.08

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Solution

The fourth proportional to 20,109.28, 27,751.68 and 13,384.08 is: 18,470.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.28 : 27,751.68 = 13,384.08 : x
  2. Step 2: Convert to fraction form
    20,109.28/27,751.68 = 13,384.08/x
  3. Step 3: Cross multiply
    20,109.28x = 27,751.68 × 13,384.08
  4. Step 4: Simplify right side
    20,109.28x = 371,430,705.25
  5. Step 5: Solve for x
    x = 371,430,705.25/20,109.28
  6. Step 6: Final answer
    x = 18,470.61

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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.