Home / 13,799.97-20,689.02-12,859.56

Finding the Fourth Proportional to 13,799.97, 20,689.02 and 12,859.56

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Solution

The fourth proportional to 13,799.97, 20,689.02 and 12,859.56 is: 19,279.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.97 : 20,689.02 = 12,859.56 : x
  2. Step 2: Convert to fraction form
    13,799.97/20,689.02 = 12,859.56/x
  3. Step 3: Cross multiply
    13,799.97x = 20,689.02 × 12,859.56
  4. Step 4: Simplify right side
    13,799.97x = 266,051,694.03
  5. Step 5: Solve for x
    x = 266,051,694.03/13,799.97
  6. Step 6: Final answer
    x = 19,279.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.