Home / 13,247.15-19,870.68-3,386.42

Finding the Fourth Proportional to 13,247.15, 19,870.68 and 3,386.42

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Solution

The fourth proportional to 13,247.15, 19,870.68 and 3,386.42 is: 5,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,247.15 : 19,870.68 = 3,386.42 : x
  2. Step 2: Convert to fraction form
    13,247.15/19,870.68 = 3,386.42/x
  3. Step 3: Cross multiply
    13,247.15x = 19,870.68 × 3,386.42
  4. Step 4: Simplify right side
    13,247.15x = 67,290,351.88
  5. Step 5: Solve for x
    x = 67,290,351.88/13,247.15
  6. Step 6: Final answer
    x = 5,079.61

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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.