Home / 13,511.48-18,645.80-7,542.80

Finding the Fourth Proportional to 13,511.48, 18,645.80 and 7,542.80

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Solution

The fourth proportional to 13,511.48, 18,645.80 and 7,542.80 is: 10,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.48 : 18,645.80 = 7,542.80 : x
  2. Step 2: Convert to fraction form
    13,511.48/18,645.80 = 7,542.80/x
  3. Step 3: Cross multiply
    13,511.48x = 18,645.80 × 7,542.80
  4. Step 4: Simplify right side
    13,511.48x = 140,641,540.24
  5. Step 5: Solve for x
    x = 140,641,540.24/13,511.48
  6. Step 6: Final answer
    x = 10,409.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.