Home / 13,555.70-20,331.49-3,695.75

Finding the Fourth Proportional to 13,555.70, 20,331.49 and 3,695.75

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Solution

The fourth proportional to 13,555.70, 20,331.49 and 3,695.75 is: 5,543.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.70 : 20,331.49 = 3,695.75 : x
  2. Step 2: Convert to fraction form
    13,555.70/20,331.49 = 3,695.75/x
  3. Step 3: Cross multiply
    13,555.70x = 20,331.49 × 3,695.75
  4. Step 4: Simplify right side
    13,555.70x = 75,140,104.17
  5. Step 5: Solve for x
    x = 75,140,104.17/13,555.70
  6. Step 6: Final answer
    x = 5,543.06

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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.