Home / 20,209.59-27,888.50-11,256.91

Finding the Fourth Proportional to 20,209.59, 27,888.50 and 11,256.91

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Solution

The fourth proportional to 20,209.59, 27,888.50 and 11,256.91 is: 15,534.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.59 : 27,888.50 = 11,256.91 : x
  2. Step 2: Convert to fraction form
    20,209.59/27,888.50 = 11,256.91/x
  3. Step 3: Cross multiply
    20,209.59x = 27,888.50 × 11,256.91
  4. Step 4: Simplify right side
    20,209.59x = 313,938,292.96
  5. Step 5: Solve for x
    x = 313,938,292.96/20,209.59
  6. Step 6: Final answer
    x = 15,534.12

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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.