Home / 12,531.39-18,800-3,646.93

Finding the Fourth Proportional to 12,531.39, 18,800 and 3,646.93

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Solution

The fourth proportional to 12,531.39, 18,800 and 3,646.93 is: 5,471.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,531.39 : 18,800 = 3,646.93 : x
  2. Step 2: Convert to fraction form
    12,531.39/18,800 = 3,646.93/x
  3. Step 3: Cross multiply
    12,531.39x = 18,800 × 3,646.93
  4. Step 4: Simplify right side
    12,531.39x = 68,562,284
  5. Step 5: Solve for x
    x = 68,562,284/12,531.39
  6. Step 6: Final answer
    x = 5,471.24

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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.