Home / 11,192.72-15,428.75-9,399.38

Finding the Fourth Proportional to 11,192.72, 15,428.75 and 9,399.38

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Solution

The fourth proportional to 11,192.72, 15,428.75 and 9,399.38 is: 12,956.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,192.72 : 15,428.75 = 9,399.38 : x
  2. Step 2: Convert to fraction form
    11,192.72/15,428.75 = 9,399.38/x
  3. Step 3: Cross multiply
    11,192.72x = 15,428.75 × 9,399.38
  4. Step 4: Simplify right side
    11,192.72x = 145,020,560.03
  5. Step 5: Solve for x
    x = 145,020,560.03/11,192.72
  6. Step 6: Final answer
    x = 12,956.69

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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.