Home / 20,071.62-27,699.02-12,112.30

Finding the Fourth Proportional to 20,071.62, 27,699.02 and 12,112.30

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Solution

The fourth proportional to 20,071.62, 27,699.02 and 12,112.30 is: 16,715.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.62 : 27,699.02 = 12,112.30 : x
  2. Step 2: Convert to fraction form
    20,071.62/27,699.02 = 12,112.30/x
  3. Step 3: Cross multiply
    20,071.62x = 27,699.02 × 12,112.30
  4. Step 4: Simplify right side
    20,071.62x = 335,498,839.95
  5. Step 5: Solve for x
    x = 335,498,839.95/20,071.62
  6. Step 6: Final answer
    x = 16,715.09

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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.