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Finding the Fourth Proportional to 12,665.15, 17,480.08 and 7,363.05

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Solution

The fourth proportional to 12,665.15, 17,480.08 and 7,363.05 is: 10,162.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,665.15 : 17,480.08 = 7,363.05 : x
  2. Step 2: Convert to fraction form
    12,665.15/17,480.08 = 7,363.05/x
  3. Step 3: Cross multiply
    12,665.15x = 17,480.08 × 7,363.05
  4. Step 4: Simplify right side
    12,665.15x = 128,706,634.05
  5. Step 5: Solve for x
    x = 128,706,634.05/12,665.15
  6. Step 6: Final answer
    x = 10,162.26

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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.