Home / 13,555.23-20,330.75-3,695.31

Finding the Fourth Proportional to 13,555.23, 20,330.75 and 3,695.31

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Solution

The fourth proportional to 13,555.23, 20,330.75 and 3,695.31 is: 5,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.23 : 20,330.75 = 3,695.31 : x
  2. Step 2: Convert to fraction form
    13,555.23/20,330.75 = 3,695.31/x
  3. Step 3: Cross multiply
    13,555.23x = 20,330.75 × 3,695.31
  4. Step 4: Simplify right side
    13,555.23x = 75,128,405.31
  5. Step 5: Solve for x
    x = 75,128,405.31/13,555.23
  6. Step 6: Final answer
    x = 5,542.39

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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.