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Finding the Fourth Proportional to 11,479.66, 15,839.01 and 7,003.12

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Solution

The fourth proportional to 11,479.66, 15,839.01 and 7,003.12 is: 9,662.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,479.66 : 15,839.01 = 7,003.12 : x
  2. Step 2: Convert to fraction form
    11,479.66/15,839.01 = 7,003.12/x
  3. Step 3: Cross multiply
    11,479.66x = 15,839.01 × 7,003.12
  4. Step 4: Simplify right side
    11,479.66x = 110,922,487.71
  5. Step 5: Solve for x
    x = 110,922,487.71/11,479.66
  6. Step 6: Final answer
    x = 9,662.52

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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.