Home / 12,255.90-18,389.92-4,860.19

Finding the Fourth Proportional to 12,255.90, 18,389.92 and 4,860.19

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Solution

The fourth proportional to 12,255.90, 18,389.92 and 4,860.19 is: 7,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.90 : 18,389.92 = 4,860.19 : x
  2. Step 2: Convert to fraction form
    12,255.90/18,389.92 = 4,860.19/x
  3. Step 3: Cross multiply
    12,255.90x = 18,389.92 × 4,860.19
  4. Step 4: Simplify right side
    12,255.90x = 89,378,513.74
  5. Step 5: Solve for x
    x = 89,378,513.74/12,255.90
  6. Step 6: Final answer
    x = 7,292.70

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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.