Home / 13,782.88-20,665.68-9,097.92

Finding the Fourth Proportional to 13,782.88, 20,665.68 and 9,097.92

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Solution

The fourth proportional to 13,782.88, 20,665.68 and 9,097.92 is: 13,641.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,782.88 : 20,665.68 = 9,097.92 : x
  2. Step 2: Convert to fraction form
    13,782.88/20,665.68 = 9,097.92/x
  3. Step 3: Cross multiply
    13,782.88x = 20,665.68 × 9,097.92
  4. Step 4: Simplify right side
    13,782.88x = 188,014,703.39
  5. Step 5: Solve for x
    x = 188,014,703.39/13,782.88
  6. Step 6: Final answer
    x = 13,641.18

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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.