Home / 12,389.85-18,584.78-3,624.77

Finding the Fourth Proportional to 12,389.85, 18,584.78 and 3,624.77

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Solution

The fourth proportional to 12,389.85, 18,584.78 and 3,624.77 is: 5,437.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,389.85 : 18,584.78 = 3,624.77 : x
  2. Step 2: Convert to fraction form
    12,389.85/18,584.78 = 3,624.77/x
  3. Step 3: Cross multiply
    12,389.85x = 18,584.78 × 3,624.77
  4. Step 4: Simplify right side
    12,389.85x = 67,365,608.52
  5. Step 5: Solve for x
    x = 67,365,608.52/12,389.85
  6. Step 6: Final answer
    x = 5,437.16

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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.