Home / 11,471.27-15,831.42-6,690.84

Finding the Fourth Proportional to 11,471.27, 15,831.42 and 6,690.84

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Solution

The fourth proportional to 11,471.27, 15,831.42 and 6,690.84 is: 9,233.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,471.27 : 15,831.42 = 6,690.84 : x
  2. Step 2: Convert to fraction form
    11,471.27/15,831.42 = 6,690.84/x
  3. Step 3: Cross multiply
    11,471.27x = 15,831.42 × 6,690.84
  4. Step 4: Simplify right side
    11,471.27x = 105,925,536.98
  5. Step 5: Solve for x
    x = 105,925,536.98/11,471.27
  6. Step 6: Final answer
    x = 9,233.99

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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.