Home / 12,115.53-16,719.39-6,737.85

Finding the Fourth Proportional to 12,115.53, 16,719.39 and 6,737.85

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Solution

The fourth proportional to 12,115.53, 16,719.39 and 6,737.85 is: 9,298.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.53 : 16,719.39 = 6,737.85 : x
  2. Step 2: Convert to fraction form
    12,115.53/16,719.39 = 6,737.85/x
  3. Step 3: Cross multiply
    12,115.53x = 16,719.39 × 6,737.85
  4. Step 4: Simplify right side
    12,115.53x = 112,652,741.91
  5. Step 5: Solve for x
    x = 112,652,741.91/12,115.53
  6. Step 6: Final answer
    x = 9,298.21

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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.