Home / 12,656.39-18,990.05-4,863.38

Finding the Fourth Proportional to 12,656.39, 18,990.05 and 4,863.38

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Solution

The fourth proportional to 12,656.39, 18,990.05 and 4,863.38 is: 7,297.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,656.39 : 18,990.05 = 4,863.38 : x
  2. Step 2: Convert to fraction form
    12,656.39/18,990.05 = 4,863.38/x
  3. Step 3: Cross multiply
    12,656.39x = 18,990.05 × 4,863.38
  4. Step 4: Simplify right side
    12,656.39x = 92,355,710.10
  5. Step 5: Solve for x
    x = 92,355,710.10/12,656.39
  6. Step 6: Final answer
    x = 7,297.16

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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.