Home / 20,207.88-27,885.87-11,256.30

Finding the Fourth Proportional to 20,207.88, 27,885.87 and 11,256.30

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Solution

The fourth proportional to 20,207.88, 27,885.87 and 11,256.30 is: 15,533.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207.88 : 27,885.87 = 11,256.30 : x
  2. Step 2: Convert to fraction form
    20,207.88/27,885.87 = 11,256.30/x
  3. Step 3: Cross multiply
    20,207.88x = 27,885.87 × 11,256.30
  4. Step 4: Simplify right side
    20,207.88x = 313,891,718.48
  5. Step 5: Solve for x
    x = 313,891,718.48/20,207.88
  6. Step 6: Final answer
    x = 15,533.13

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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.