Home / 12,389.24-18,584.70-3,624.20

Finding the Fourth Proportional to 12,389.24, 18,584.70 and 3,624.20

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Solution

The fourth proportional to 12,389.24, 18,584.70 and 3,624.20 is: 5,436.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.24 : 18,584.70 = 3,624.20 : x
  2. Step 2: Convert to fraction form
    12,389.24/18,584.70 = 3,624.20/x
  3. Step 3: Cross multiply
    12,389.24x = 18,584.70 × 3,624.20
  4. Step 4: Simplify right side
    12,389.24x = 67,354,669.74
  5. Step 5: Solve for x
    x = 67,354,669.74/12,389.24
  6. Step 6: Final answer
    x = 5,436.55

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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.