Home / 13,542.75-18,689.36-7,575.44

Finding the Fourth Proportional to 13,542.75, 18,689.36 and 7,575.44

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Solution

The fourth proportional to 13,542.75, 18,689.36 and 7,575.44 is: 10,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,542.75 : 18,689.36 = 7,575.44 : x
  2. Step 2: Convert to fraction form
    13,542.75/18,689.36 = 7,575.44/x
  3. Step 3: Cross multiply
    13,542.75x = 18,689.36 × 7,575.44
  4. Step 4: Simplify right side
    13,542.75x = 141,579,993.99
  5. Step 5: Solve for x
    x = 141,579,993.99/13,542.75
  6. Step 6: Final answer
    x = 10,454.30

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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.