Home / 10,117.78-15,174.82-2,720.51

Finding the Fourth Proportional to 10,117.78, 15,174.82 and 2,720.51

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Solution

The fourth proportional to 10,117.78, 15,174.82 and 2,720.51 is: 4,080.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,117.78 : 15,174.82 = 2,720.51 : x
  2. Step 2: Convert to fraction form
    10,117.78/15,174.82 = 2,720.51/x
  3. Step 3: Cross multiply
    10,117.78x = 15,174.82 × 2,720.51
  4. Step 4: Simplify right side
    10,117.78x = 41,283,166.88
  5. Step 5: Solve for x
    x = 41,283,166.88/10,117.78
  6. Step 6: Final answer
    x = 4,080.26

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1.5x scale

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.