Home / 12,587.19-18,880.78-5,993.38

Finding the Fourth Proportional to 12,587.19, 18,880.78 and 5,993.38

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Solution

The fourth proportional to 12,587.19, 18,880.78 and 5,993.38 is: 8,990.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.19 : 18,880.78 = 5,993.38 : x
  2. Step 2: Convert to fraction form
    12,587.19/18,880.78 = 5,993.38/x
  3. Step 3: Cross multiply
    12,587.19x = 18,880.78 × 5,993.38
  4. Step 4: Simplify right side
    12,587.19x = 113,159,736.44
  5. Step 5: Solve for x
    x = 113,159,736.44/12,587.19
  6. Step 6: Final answer
    x = 8,990.07

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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.