Home / 20,070.62-27,697.64-12,111.30

Finding the Fourth Proportional to 20,070.62, 27,697.64 and 12,111.30

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Solution

The fourth proportional to 20,070.62, 27,697.64 and 12,111.30 is: 16,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.62 : 27,697.64 = 12,111.30 : x
  2. Step 2: Convert to fraction form
    20,070.62/27,697.64 = 12,111.30/x
  3. Step 3: Cross multiply
    20,070.62x = 27,697.64 × 12,111.30
  4. Step 4: Simplify right side
    20,070.62x = 335,454,366.78
  5. Step 5: Solve for x
    x = 335,454,366.78/20,070.62
  6. Step 6: Final answer
    x = 16,713.71

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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.