Home / 28,219.50-38,942.92-15,644.25

Finding the Fourth Proportional to 28,219.50, 38,942.92 and 15,644.25

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Solution

The fourth proportional to 28,219.50, 38,942.92 and 15,644.25 is: 21,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.50 : 38,942.92 = 15,644.25 : x
  2. Step 2: Convert to fraction form
    28,219.50/38,942.92 = 15,644.25/x
  3. Step 3: Cross multiply
    28,219.50x = 38,942.92 × 15,644.25
  4. Step 4: Simplify right side
    28,219.50x = 609,232,776.21
  5. Step 5: Solve for x
    x = 609,232,776.21/28,219.50
  6. Step 6: Final answer
    x = 21,589.07

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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.