Home / 28,223.44-38,949.56-16,890.78

Finding the Fourth Proportional to 28,223.44, 38,949.56 and 16,890.78

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Solution

The fourth proportional to 28,223.44, 38,949.56 and 16,890.78 is: 23,310.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,223.44 : 38,949.56 = 16,890.78 : x
  2. Step 2: Convert to fraction form
    28,223.44/38,949.56 = 16,890.78/x
  3. Step 3: Cross multiply
    28,223.44x = 38,949.56 × 16,890.78
  4. Step 4: Simplify right side
    28,223.44x = 657,888,354.91
  5. Step 5: Solve for x
    x = 657,888,354.91/28,223.44
  6. Step 6: Final answer
    x = 23,310.00

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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.