Home / 20,552.11-30,831.39-8,705.91

Finding the Fourth Proportional to 20,552.11, 30,831.39 and 8,705.91

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Solution

The fourth proportional to 20,552.11, 30,831.39 and 8,705.91 is: 13,060.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,552.11 : 30,831.39 = 8,705.91 : x
  2. Step 2: Convert to fraction form
    20,552.11/30,831.39 = 8,705.91/x
  3. Step 3: Cross multiply
    20,552.11x = 30,831.39 × 8,705.91
  4. Step 4: Simplify right side
    20,552.11x = 268,415,409.89
  5. Step 5: Solve for x
    x = 268,415,409.89/20,552.11
  6. Step 6: Final answer
    x = 13,060.24

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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.