Home / 13,555.22-20,295.91-10,542.80

Finding the Fourth Proportional to 13,555.22, 20,295.91 and 10,542.80

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Solution

The fourth proportional to 13,555.22, 20,295.91 and 10,542.80 is: 15,785.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,555.22 : 20,295.91 = 10,542.80 : x
  2. Step 2: Convert to fraction form
    13,555.22/20,295.91 = 10,542.80/x
  3. Step 3: Cross multiply
    13,555.22x = 20,295.91 × 10,542.80
  4. Step 4: Simplify right side
    13,555.22x = 213,975,719.95
  5. Step 5: Solve for x
    x = 213,975,719.95/13,555.22
  6. Step 6: Final answer
    x = 15,785.48

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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.