Home / 20,039.30-27,650.13-12,079.70

Finding the Fourth Proportional to 20,039.30, 27,650.13 and 12,079.70

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Solution

The fourth proportional to 20,039.30, 27,650.13 and 12,079.70 is: 16,667.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,039.30 : 27,650.13 = 12,079.70 : x
  2. Step 2: Convert to fraction form
    20,039.30/27,650.13 = 12,079.70/x
  3. Step 3: Cross multiply
    20,039.30x = 27,650.13 × 12,079.70
  4. Step 4: Simplify right side
    20,039.30x = 334,005,275.36
  5. Step 5: Solve for x
    x = 334,005,275.36/20,039.30
  6. Step 6: Final answer
    x = 16,667.51

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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.