Home / 21,949.65-30,281.58-16,220.79

Finding the Fourth Proportional to 21,949.65, 30,281.58 and 16,220.79

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Solution

The fourth proportional to 21,949.65, 30,281.58 and 16,220.79 is: 22,378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,949.65 : 30,281.58 = 16,220.79 : x
  2. Step 2: Convert to fraction form
    21,949.65/30,281.58 = 16,220.79/x
  3. Step 3: Cross multiply
    21,949.65x = 30,281.58 × 16,220.79
  4. Step 4: Simplify right side
    21,949.65x = 491,191,150.05
  5. Step 5: Solve for x
    x = 491,191,150.05/21,949.65
  6. Step 6: Final answer
    x = 22,378.09

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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.