Home / 13,555.14-20,330.63-3,695.21

Finding the Fourth Proportional to 13,555.14, 20,330.63 and 3,695.21

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Solution

The fourth proportional to 13,555.14, 20,330.63 and 3,695.21 is: 5,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.14 : 20,330.63 = 3,695.21 : x
  2. Step 2: Convert to fraction form
    13,555.14/20,330.63 = 3,695.21/x
  3. Step 3: Cross multiply
    13,555.14x = 20,330.63 × 3,695.21
  4. Step 4: Simplify right side
    13,555.14x = 75,125,947.28
  5. Step 5: Solve for x
    x = 75,125,947.28/13,555.14
  6. Step 6: Final answer
    x = 5,542.25

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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.