Home / 20,079.57-30,115.08-12,674.13

Finding the Fourth Proportional to 20,079.57, 30,115.08 and 12,674.13

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Solution

The fourth proportional to 20,079.57, 30,115.08 and 12,674.13 is: 19,008.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.57 : 30,115.08 = 12,674.13 : x
  2. Step 2: Convert to fraction form
    20,079.57/30,115.08 = 12,674.13/x
  3. Step 3: Cross multiply
    20,079.57x = 30,115.08 × 12,674.13
  4. Step 4: Simplify right side
    20,079.57x = 381,682,438.88
  5. Step 5: Solve for x
    x = 381,682,438.88/20,079.57
  6. Step 6: Final answer
    x = 19,008.50

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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.