Home / 12,115.40-18,166.27-4,711.38

Finding the Fourth Proportional to 12,115.40, 18,166.27 and 4,711.38

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Solution

The fourth proportional to 12,115.40, 18,166.27 and 4,711.38 is: 7,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.40 : 18,166.27 = 4,711.38 : x
  2. Step 2: Convert to fraction form
    12,115.40/18,166.27 = 4,711.38/x
  3. Step 3: Cross multiply
    12,115.40x = 18,166.27 × 4,711.38
  4. Step 4: Simplify right side
    12,115.40x = 85,588,228.96
  5. Step 5: Solve for x
    x = 85,588,228.96/12,115.40
  6. Step 6: Final answer
    x = 7,064.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.