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Finding the Fourth Proportional to 11,399.34, 15,731.06 and 6,363.51

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Solution

The fourth proportional to 11,399.34, 15,731.06 and 6,363.51 is: 8,781.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.34 : 15,731.06 = 6,363.51 : x
  2. Step 2: Convert to fraction form
    11,399.34/15,731.06 = 6,363.51/x
  3. Step 3: Cross multiply
    11,399.34x = 15,731.06 × 6,363.51
  4. Step 4: Simplify right side
    11,399.34x = 100,104,725.80
  5. Step 5: Solve for x
    x = 100,104,725.80/11,399.34
  6. Step 6: Final answer
    x = 8,781.62

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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.