Home / 11,784.15-16,261.71-6,478.92

Finding the Fourth Proportional to 11,784.15, 16,261.71 and 6,478.92

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Solution

The fourth proportional to 11,784.15, 16,261.71 and 6,478.92 is: 8,940.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,784.15 : 16,261.71 = 6,478.92 : x
  2. Step 2: Convert to fraction form
    11,784.15/16,261.71 = 6,478.92/x
  3. Step 3: Cross multiply
    11,784.15x = 16,261.71 × 6,478.92
  4. Step 4: Simplify right side
    11,784.15x = 105,358,293.86
  5. Step 5: Solve for x
    x = 105,358,293.86/11,784.15
  6. Step 6: Final answer
    x = 8,940.68

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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.