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Finding the Fourth Proportional to 11,345.66, 15,627.68 and 7,936.64

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Solution

The fourth proportional to 11,345.66, 15,627.68 and 7,936.64 is: 10,932.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,345.66 : 15,627.68 = 7,936.64 : x
  2. Step 2: Convert to fraction form
    11,345.66/15,627.68 = 7,936.64/x
  3. Step 3: Cross multiply
    11,345.66x = 15,627.68 × 7,936.64
  4. Step 4: Simplify right side
    11,345.66x = 124,031,270.20
  5. Step 5: Solve for x
    x = 124,031,270.20/11,345.66
  6. Step 6: Final answer
    x = 10,932.05

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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.