Home / 15,933.87-21,991.41-9,218.34

Finding the Fourth Proportional to 15,933.87, 21,991.41 and 9,218.34

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Solution

The fourth proportional to 15,933.87, 21,991.41 and 9,218.34 is: 12,722.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.87 : 21,991.41 = 9,218.34 : x
  2. Step 2: Convert to fraction form
    15,933.87/21,991.41 = 9,218.34/x
  3. Step 3: Cross multiply
    15,933.87x = 21,991.41 × 9,218.34
  4. Step 4: Simplify right side
    15,933.87x = 202,724,294.46
  5. Step 5: Solve for x
    x = 202,724,294.46/15,933.87
  6. Step 6: Final answer
    x = 12,722.85

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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.