Home / 20,079.44-27,710.35-12,120.11

Finding the Fourth Proportional to 20,079.44, 27,710.35 and 12,120.11

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Solution

The fourth proportional to 20,079.44, 27,710.35 and 12,120.11 is: 16,726.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.44 : 27,710.35 = 12,120.11 : x
  2. Step 2: Convert to fraction form
    20,079.44/27,710.35 = 12,120.11/x
  3. Step 3: Cross multiply
    20,079.44x = 27,710.35 × 12,120.11
  4. Step 4: Simplify right side
    20,079.44x = 335,852,498.81
  5. Step 5: Solve for x
    x = 335,852,498.81/20,079.44
  6. Step 6: Final answer
    x = 16,726.19

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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.