Home / 20,095.36-27,731.52-11,142.88

Finding the Fourth Proportional to 20,095.36, 27,731.52 and 11,142.88

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Solution

The fourth proportional to 20,095.36, 27,731.52 and 11,142.88 is: 15,377.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.36 : 27,731.52 = 11,142.88 : x
  2. Step 2: Convert to fraction form
    20,095.36/27,731.52 = 11,142.88/x
  3. Step 3: Cross multiply
    20,095.36x = 27,731.52 × 11,142.88
  4. Step 4: Simplify right side
    20,095.36x = 309,008,999.58
  5. Step 5: Solve for x
    x = 309,008,999.58/20,095.36
  6. Step 6: Final answer
    x = 15,377.13

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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.