Home / 20,209.59-27,888.57-11,257.47

Finding the Fourth Proportional to 20,209.59, 27,888.57 and 11,257.47

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Solution

The fourth proportional to 20,209.59, 27,888.57 and 11,257.47 is: 15,534.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.59 : 27,888.57 = 11,257.47 : x
  2. Step 2: Convert to fraction form
    20,209.59/27,888.57 = 11,257.47/x
  3. Step 3: Cross multiply
    20,209.59x = 27,888.57 × 11,257.47
  4. Step 4: Simplify right side
    20,209.59x = 313,954,740.12
  5. Step 5: Solve for x
    x = 313,954,740.12/20,209.59
  6. Step 6: Final answer
    x = 15,534.94

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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.