Home / 15,933.87-21,987.72-9,965.25

Finding the Fourth Proportional to 15,933.87, 21,987.72 and 9,965.25

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Solution

The fourth proportional to 15,933.87, 21,987.72 and 9,965.25 is: 13,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.87 : 21,987.72 = 9,965.25 : x
  2. Step 2: Convert to fraction form
    15,933.87/21,987.72 = 9,965.25/x
  3. Step 3: Cross multiply
    15,933.87x = 21,987.72 × 9,965.25
  4. Step 4: Simplify right side
    15,933.87x = 219,113,126.73
  5. Step 5: Solve for x
    x = 219,113,126.73/15,933.87
  6. Step 6: Final answer
    x = 13,751.41

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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.