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Finding the Fourth Proportional to 11,455.68, 15,812.64 and 6,982.32

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Solution

The fourth proportional to 11,455.68, 15,812.64 and 6,982.32 is: 9,637.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,455.68 : 15,812.64 = 6,982.32 : x
  2. Step 2: Convert to fraction form
    11,455.68/15,812.64 = 6,982.32/x
  3. Step 3: Cross multiply
    11,455.68x = 15,812.64 × 6,982.32
  4. Step 4: Simplify right side
    11,455.68x = 110,408,912.52
  5. Step 5: Solve for x
    x = 110,408,912.52/11,455.68
  6. Step 6: Final answer
    x = 9,637.92

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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.