Home / 9,109.78-13,648.96-7,112.48

Finding the Fourth Proportional to 9,109.78, 13,648.96 and 7,112.48

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Solution

The fourth proportional to 9,109.78, 13,648.96 and 7,112.48 is: 10,656.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,109.78 : 13,648.96 = 7,112.48 : x
  2. Step 2: Convert to fraction form
    9,109.78/13,648.96 = 7,112.48/x
  3. Step 3: Cross multiply
    9,109.78x = 13,648.96 × 7,112.48
  4. Step 4: Simplify right side
    9,109.78x = 97,077,855.66
  5. Step 5: Solve for x
    x = 97,077,855.66/9,109.78
  6. Step 6: Final answer
    x = 10,656.44

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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.