Home / 12,138.99-18,208.27-5,897.94

Finding the Fourth Proportional to 12,138.99, 18,208.27 and 5,897.94

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Solution

The fourth proportional to 12,138.99, 18,208.27 and 5,897.94 is: 8,846.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.99 : 18,208.27 = 5,897.94 : x
  2. Step 2: Convert to fraction form
    12,138.99/18,208.27 = 5,897.94/x
  3. Step 3: Cross multiply
    12,138.99x = 18,208.27 × 5,897.94
  4. Step 4: Simplify right side
    12,138.99x = 107,391,283.96
  5. Step 5: Solve for x
    x = 107,391,283.96/12,138.99
  6. Step 6: Final answer
    x = 8,846.81

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Double scale
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Similar ratio
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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.