Home / 13,631.91-20,443.55-4,395.75

Finding the Fourth Proportional to 13,631.91, 20,443.55 and 4,395.75

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Solution

The fourth proportional to 13,631.91, 20,443.55 and 4,395.75 is: 6,592.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.91 : 20,443.55 = 4,395.75 : x
  2. Step 2: Convert to fraction form
    13,631.91/20,443.55 = 4,395.75/x
  3. Step 3: Cross multiply
    13,631.91x = 20,443.55 × 4,395.75
  4. Step 4: Simplify right side
    13,631.91x = 89,864,712.93
  5. Step 5: Solve for x
    x = 89,864,712.93/13,631.91
  6. Step 6: Final answer
    x = 6,592.23

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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.