Home / 13,585.78-20,378.67-3,724.98

Finding the Fourth Proportional to 13,585.78, 20,378.67 and 3,724.98

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Solution

The fourth proportional to 13,585.78, 20,378.67 and 3,724.98 is: 5,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.78 : 20,378.67 = 3,724.98 : x
  2. Step 2: Convert to fraction form
    13,585.78/20,378.67 = 3,724.98/x
  3. Step 3: Cross multiply
    13,585.78x = 20,378.67 × 3,724.98
  4. Step 4: Simplify right side
    13,585.78x = 75,910,138.18
  5. Step 5: Solve for x
    x = 75,910,138.18/13,585.78
  6. Step 6: Final answer
    x = 5,587.47

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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.