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Finding the Fourth Proportional to 12,371.87, 17,079.06 and 7,065.66

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Solution

The fourth proportional to 12,371.87, 17,079.06 and 7,065.66 is: 9,753.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.87 : 17,079.06 = 7,065.66 : x
  2. Step 2: Convert to fraction form
    12,371.87/17,079.06 = 7,065.66/x
  3. Step 3: Cross multiply
    12,371.87x = 17,079.06 × 7,065.66
  4. Step 4: Simplify right side
    12,371.87x = 120,674,831.08
  5. Step 5: Solve for x
    x = 120,674,831.08/12,371.87
  6. Step 6: Final answer
    x = 9,753.97

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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.