Home / 20,095.80-27,731.16-11,143.22

Finding the Fourth Proportional to 20,095.80, 27,731.16 and 11,143.22

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Solution

The fourth proportional to 20,095.80, 27,731.16 and 11,143.22 is: 15,377.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.80 : 27,731.16 = 11,143.22 : x
  2. Step 2: Convert to fraction form
    20,095.80/27,731.16 = 11,143.22/x
  3. Step 3: Cross multiply
    20,095.80x = 27,731.16 × 11,143.22
  4. Step 4: Simplify right side
    20,095.80x = 309,014,278.08
  5. Step 5: Solve for x
    x = 309,014,278.08/20,095.80
  6. Step 6: Final answer
    x = 15,377.06

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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.