Home / 15,933.90-21,989.38-8,860.82

Finding the Fourth Proportional to 15,933.90, 21,989.38 and 8,860.82

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Solution

The fourth proportional to 15,933.90, 21,989.38 and 8,860.82 is: 12,228.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,933.90 : 21,989.38 = 8,860.82 : x
  2. Step 2: Convert to fraction form
    15,933.90/21,989.38 = 8,860.82/x
  3. Step 3: Cross multiply
    15,933.90x = 21,989.38 × 8,860.82
  4. Step 4: Simplify right side
    15,933.90x = 194,843,938.09
  5. Step 5: Solve for x
    x = 194,843,938.09/15,933.90
  6. Step 6: Final answer
    x = 12,228.26

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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.