Home / 9,990.56-14,981.22-5,831.78

Finding the Fourth Proportional to 9,990.56, 14,981.22 and 5,831.78

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Solution

The fourth proportional to 9,990.56, 14,981.22 and 5,831.78 is: 8,744.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.56 : 14,981.22 = 5,831.78 : x
  2. Step 2: Convert to fraction form
    9,990.56/14,981.22 = 5,831.78/x
  3. Step 3: Cross multiply
    9,990.56x = 14,981.22 × 5,831.78
  4. Step 4: Simplify right side
    9,990.56x = 87,367,179.17
  5. Step 5: Solve for x
    x = 87,367,179.17/9,990.56
  6. Step 6: Final answer
    x = 8,744.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.