Home / 11,163.72-15,397.81-7,390.12

Finding the Fourth Proportional to 11,163.72, 15,397.81 and 7,390.12

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Solution

The fourth proportional to 11,163.72, 15,397.81 and 7,390.12 is: 10,192.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,163.72 : 15,397.81 = 7,390.12 : x
  2. Step 2: Convert to fraction form
    11,163.72/15,397.81 = 7,390.12/x
  3. Step 3: Cross multiply
    11,163.72x = 15,397.81 × 7,390.12
  4. Step 4: Simplify right side
    11,163.72x = 113,791,663.64
  5. Step 5: Solve for x
    x = 113,791,663.64/11,163.72
  6. Step 6: Final answer
    x = 10,192.99

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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.