Home / 20,095.18-27,731.68-11,143.06

Finding the Fourth Proportional to 20,095.18, 27,731.68 and 11,143.06

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Solution

The fourth proportional to 20,095.18, 27,731.68 and 11,143.06 is: 15,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.18 : 27,731.68 = 11,143.06 : x
  2. Step 2: Convert to fraction form
    20,095.18/27,731.68 = 11,143.06/x
  3. Step 3: Cross multiply
    20,095.18x = 27,731.68 × 11,143.06
  4. Step 4: Simplify right side
    20,095.18x = 309,015,635.48
  5. Step 5: Solve for x
    x = 309,015,635.48/20,095.18
  6. Step 6: Final answer
    x = 15,377.60

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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.