Home / 20,065.73-27,704.15-12,515.10

Finding the Fourth Proportional to 20,065.73, 27,704.15 and 12,515.10

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Solution

The fourth proportional to 20,065.73, 27,704.15 and 12,515.10 is: 17,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,065.73 : 27,704.15 = 12,515.10 : x
  2. Step 2: Convert to fraction form
    20,065.73/27,704.15 = 12,515.10/x
  3. Step 3: Cross multiply
    20,065.73x = 27,704.15 × 12,515.10
  4. Step 4: Simplify right side
    20,065.73x = 346,720,145.09
  5. Step 5: Solve for x
    x = 346,720,145.09/20,065.73
  6. Step 6: Final answer
    x = 17,279.22

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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.