Home / 12,389.88-18,588.12-3,625.44

Finding the Fourth Proportional to 12,389.88, 18,588.12 and 3,625.44

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Solution

The fourth proportional to 12,389.88, 18,588.12 and 3,625.44 is: 5,439.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.88 : 18,588.12 = 3,625.44 : x
  2. Step 2: Convert to fraction form
    12,389.88/18,588.12 = 3,625.44/x
  3. Step 3: Cross multiply
    12,389.88x = 18,588.12 × 3,625.44
  4. Step 4: Simplify right side
    12,389.88x = 67,390,113.77
  5. Step 5: Solve for x
    x = 67,390,113.77/12,389.88
  6. Step 6: Final answer
    x = 5,439.13

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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.