Home / 13,987.32-20,974.69-4,123.14

Finding the Fourth Proportional to 13,987.32, 20,974.69 and 4,123.14

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Solution

The fourth proportional to 13,987.32, 20,974.69 and 4,123.14 is: 6,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987.32 : 20,974.69 = 4,123.14 : x
  2. Step 2: Convert to fraction form
    13,987.32/20,974.69 = 4,123.14/x
  3. Step 3: Cross multiply
    13,987.32x = 20,974.69 × 4,123.14
  4. Step 4: Simplify right side
    13,987.32x = 86,481,583.33
  5. Step 5: Solve for x
    x = 86,481,583.33/13,987.32
  6. Step 6: Final answer
    x = 6,182.86

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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.