Home / 20,095.10-27,731.19-11,142.38

Finding the Fourth Proportional to 20,095.10, 27,731.19 and 11,142.38

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Solution

The fourth proportional to 20,095.10, 27,731.19 and 11,142.38 is: 15,376.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.10 : 27,731.19 = 11,142.38 : x
  2. Step 2: Convert to fraction form
    20,095.10/27,731.19 = 11,142.38/x
  3. Step 3: Cross multiply
    20,095.10x = 27,731.19 × 11,142.38
  4. Step 4: Simplify right side
    20,095.10x = 308,991,346.03
  5. Step 5: Solve for x
    x = 308,991,346.03/20,095.10
  6. Step 6: Final answer
    x = 15,376.45

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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.