Home / 15,355.13-21,190.07-9,067.50

Finding the Fourth Proportional to 15,355.13, 21,190.07 and 9,067.50

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Solution

The fourth proportional to 15,355.13, 21,190.07 and 9,067.50 is: 12,513.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,355.13 : 21,190.07 = 9,067.50 : x
  2. Step 2: Convert to fraction form
    15,355.13/21,190.07 = 9,067.50/x
  3. Step 3: Cross multiply
    15,355.13x = 21,190.07 × 9,067.50
  4. Step 4: Simplify right side
    15,355.13x = 192,140,982.39
  5. Step 5: Solve for x
    x = 192,140,982.39/15,355.13
  6. Step 6: Final answer
    x = 12,513.15

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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.