Home / 20,071.52-27,698.90-12,112.22

Finding the Fourth Proportional to 20,071.52, 27,698.90 and 12,112.22

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Solution

The fourth proportional to 20,071.52, 27,698.90 and 12,112.22 is: 16,714.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,071.52 : 27,698.90 = 12,112.22 : x
  2. Step 2: Convert to fraction form
    20,071.52/27,698.90 = 12,112.22/x
  3. Step 3: Cross multiply
    20,071.52x = 27,698.90 × 12,112.22
  4. Step 4: Simplify right side
    20,071.52x = 335,495,170.56
  5. Step 5: Solve for x
    x = 335,495,170.56/20,071.52
  6. Step 6: Final answer
    x = 16,714.99

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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.