Home / 11,188.72-15,428.64-9,601.12

Finding the Fourth Proportional to 11,188.72, 15,428.64 and 9,601.12

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Solution

The fourth proportional to 11,188.72, 15,428.64 and 9,601.12 is: 13,239.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,188.72 : 15,428.64 = 9,601.12 : x
  2. Step 2: Convert to fraction form
    11,188.72/15,428.64 = 9,601.12/x
  3. Step 3: Cross multiply
    11,188.72x = 15,428.64 × 9,601.12
  4. Step 4: Simplify right side
    11,188.72x = 148,132,224.08
  5. Step 5: Solve for x
    x = 148,132,224.08/11,188.72
  6. Step 6: Final answer
    x = 13,239.43

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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.