Home / 20,070.70-27,698.55-12,112.78

Finding the Fourth Proportional to 20,070.70, 27,698.55 and 12,112.78

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Solution

The fourth proportional to 20,070.70, 27,698.55 and 12,112.78 is: 16,716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.70 : 27,698.55 = 12,112.78 : x
  2. Step 2: Convert to fraction form
    20,070.70/27,698.55 = 12,112.78/x
  3. Step 3: Cross multiply
    20,070.70x = 27,698.55 × 12,112.78
  4. Step 4: Simplify right side
    20,070.70x = 335,506,442.47
  5. Step 5: Solve for x
    x = 335,506,442.47/20,070.70
  6. Step 6: Final answer
    x = 16,716.23

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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.