Home / 10,117.78-15,167.43-3,540.38

Finding the Fourth Proportional to 10,117.78, 15,167.43 and 3,540.38

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Solution

The fourth proportional to 10,117.78, 15,167.43 and 3,540.38 is: 5,307.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.78 : 15,167.43 = 3,540.38 : x
  2. Step 2: Convert to fraction form
    10,117.78/15,167.43 = 3,540.38/x
  3. Step 3: Cross multiply
    10,117.78x = 15,167.43 × 3,540.38
  4. Step 4: Simplify right side
    10,117.78x = 53,698,475.30
  5. Step 5: Solve for x
    x = 53,698,475.30/10,117.78
  6. Step 6: Final answer
    x = 5,307.34

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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.