Home / 20,741.10-31,115.64-11,376

Finding the Fourth Proportional to 20,741.10, 31,115.64 and 11,376

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Solution

The fourth proportional to 20,741.10, 31,115.64 and 11,376 is: 17,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.10 : 31,115.64 = 11,376 : x
  2. Step 2: Convert to fraction form
    20,741.10/31,115.64 = 11,376/x
  3. Step 3: Cross multiply
    20,741.10x = 31,115.64 × 11,376
  4. Step 4: Simplify right side
    20,741.10x = 353,971,520.64
  5. Step 5: Solve for x
    x = 353,971,520.64/20,741.10
  6. Step 6: Final answer
    x = 17,066.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.