Home / 12,188.86-16,823.73-6,886.78

Finding the Fourth Proportional to 12,188.86, 16,823.73 and 6,886.78

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Solution

The fourth proportional to 12,188.86, 16,823.73 and 6,886.78 is: 9,505.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,188.86 : 16,823.73 = 6,886.78 : x
  2. Step 2: Convert to fraction form
    12,188.86/16,823.73 = 6,886.78/x
  3. Step 3: Cross multiply
    12,188.86x = 16,823.73 × 6,886.78
  4. Step 4: Simplify right side
    12,188.86x = 115,861,327.29
  5. Step 5: Solve for x
    x = 115,861,327.29/12,188.86
  6. Step 6: Final answer
    x = 9,505.51

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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.