Home / 20,267.88-27,972.47-11,315.96

Finding the Fourth Proportional to 20,267.88, 27,972.47 and 11,315.96

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Solution

The fourth proportional to 20,267.88, 27,972.47 and 11,315.96 is: 15,617.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.88 : 27,972.47 = 11,315.96 : x
  2. Step 2: Convert to fraction form
    20,267.88/27,972.47 = 11,315.96/x
  3. Step 3: Cross multiply
    20,267.88x = 27,972.47 × 11,315.96
  4. Step 4: Simplify right side
    20,267.88x = 316,535,344.95
  5. Step 5: Solve for x
    x = 316,535,344.95/20,267.88
  6. Step 6: Final answer
    x = 15,617.59

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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.