Home / 11,451.78-15,805.53-6,672.51

Finding the Fourth Proportional to 11,451.78, 15,805.53 and 6,672.51

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Solution

The fourth proportional to 11,451.78, 15,805.53 and 6,672.51 is: 9,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,451.78 : 15,805.53 = 6,672.51 : x
  2. Step 2: Convert to fraction form
    11,451.78/15,805.53 = 6,672.51/x
  3. Step 3: Cross multiply
    11,451.78x = 15,805.53 × 6,672.51
  4. Step 4: Simplify right side
    11,451.78x = 105,462,556.98
  5. Step 5: Solve for x
    x = 105,462,556.98/11,451.78
  6. Step 6: Final answer
    x = 9,209.27

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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.