Home / 11,125.44-15,330.24-9,129.60

Finding the Fourth Proportional to 11,125.44, 15,330.24 and 9,129.60

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Solution

The fourth proportional to 11,125.44, 15,330.24 and 9,129.60 is: 12,580.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,125.44 : 15,330.24 = 9,129.60 : x
  2. Step 2: Convert to fraction form
    11,125.44/15,330.24 = 9,129.60/x
  3. Step 3: Cross multiply
    11,125.44x = 15,330.24 × 9,129.60
  4. Step 4: Simplify right side
    11,125.44x = 139,958,959.10
  5. Step 5: Solve for x
    x = 139,958,959.10/11,125.44
  6. Step 6: Final answer
    x = 12,580.08

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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.