Home / 20,095.04-27,731.20-11,142.92

Finding the Fourth Proportional to 20,095.04, 27,731.20 and 11,142.92

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Solution

The fourth proportional to 20,095.04, 27,731.20 and 11,142.92 is: 15,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.04 : 27,731.20 = 11,142.92 : x
  2. Step 2: Convert to fraction form
    20,095.04/27,731.20 = 11,142.92/x
  3. Step 3: Cross multiply
    20,095.04x = 27,731.20 × 11,142.92
  4. Step 4: Simplify right side
    20,095.04x = 309,006,543.10
  5. Step 5: Solve for x
    x = 309,006,543.10/20,095.04
  6. Step 6: Final answer
    x = 15,377.25

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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.