Home / 15,933.20-21,993.27-9,645.57

Finding the Fourth Proportional to 15,933.20, 21,993.27 and 9,645.57

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Solution

The fourth proportional to 15,933.20, 21,993.27 and 9,645.57 is: 13,314.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.20 : 21,993.27 = 9,645.57 : x
  2. Step 2: Convert to fraction form
    15,933.20/21,993.27 = 9,645.57/x
  3. Step 3: Cross multiply
    15,933.20x = 21,993.27 × 9,645.57
  4. Step 4: Simplify right side
    15,933.20x = 212,137,625.31
  5. Step 5: Solve for x
    x = 212,137,625.31/15,933.20
  6. Step 6: Final answer
    x = 13,314.19

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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.