Home / 11,777.20-16,252.28-6,399.50

Finding the Fourth Proportional to 11,777.20, 16,252.28 and 6,399.50

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Solution

The fourth proportional to 11,777.20, 16,252.28 and 6,399.50 is: 8,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,777.20 : 16,252.28 = 6,399.50 : x
  2. Step 2: Convert to fraction form
    11,777.20/16,252.28 = 6,399.50/x
  3. Step 3: Cross multiply
    11,777.20x = 16,252.28 × 6,399.50
  4. Step 4: Simplify right side
    11,777.20x = 104,006,465.86
  5. Step 5: Solve for x
    x = 104,006,465.86/11,777.20
  6. Step 6: Final answer
    x = 8,831.17

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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.