Home / 15,933.79-21,982.75-9,643.87

Finding the Fourth Proportional to 15,933.79, 21,982.75 and 9,643.87

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Solution

The fourth proportional to 15,933.79, 21,982.75 and 9,643.87 is: 13,304.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.79 : 21,982.75 = 9,643.87 : x
  2. Step 2: Convert to fraction form
    15,933.79/21,982.75 = 9,643.87/x
  3. Step 3: Cross multiply
    15,933.79x = 21,982.75 × 9,643.87
  4. Step 4: Simplify right side
    15,933.79x = 211,998,783.24
  5. Step 5: Solve for x
    x = 211,998,783.24/15,933.79
  6. Step 6: Final answer
    x = 13,304.98

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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.