Home / 20,266.88-27,968.32-11,315.18

Finding the Fourth Proportional to 20,266.88, 27,968.32 and 11,315.18

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Solution

The fourth proportional to 20,266.88, 27,968.32 and 11,315.18 is: 15,614.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.88 : 27,968.32 = 11,315.18 : x
  2. Step 2: Convert to fraction form
    20,266.88/27,968.32 = 11,315.18/x
  3. Step 3: Cross multiply
    20,266.88x = 27,968.32 × 11,315.18
  4. Step 4: Simplify right side
    20,266.88x = 316,466,575.10
  5. Step 5: Solve for x
    x = 316,466,575.10/20,266.88
  6. Step 6: Final answer
    x = 15,614.96

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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.