Home / 12,155.15-16,773.53-6,778.17

Finding the Fourth Proportional to 12,155.15, 16,773.53 and 6,778.17

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Solution

The fourth proportional to 12,155.15, 16,773.53 and 6,778.17 is: 9,353.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.15 : 16,773.53 = 6,778.17 : x
  2. Step 2: Convert to fraction form
    12,155.15/16,773.53 = 6,778.17/x
  3. Step 3: Cross multiply
    12,155.15x = 16,773.53 × 6,778.17
  4. Step 4: Simplify right side
    12,155.15x = 113,693,803.95
  5. Step 5: Solve for x
    x = 113,693,803.95/12,155.15
  6. Step 6: Final answer
    x = 9,353.55

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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.