Home / 20,831.01-31,249.76-6,787.77

Finding the Fourth Proportional to 20,831.01, 31,249.76 and 6,787.77

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Solution

The fourth proportional to 20,831.01, 31,249.76 and 6,787.77 is: 10,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,831.01 : 31,249.76 = 6,787.77 : x
  2. Step 2: Convert to fraction form
    20,831.01/31,249.76 = 6,787.77/x
  3. Step 3: Cross multiply
    20,831.01x = 31,249.76 × 6,787.77
  4. Step 4: Simplify right side
    20,831.01x = 212,116,149.50
  5. Step 5: Solve for x
    x = 212,116,149.50/20,831.01
  6. Step 6: Final answer
    x = 10,182.71

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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.