Home / 28,219.38-38,942.52-15,644.10

Finding the Fourth Proportional to 28,219.38, 38,942.52 and 15,644.10

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Solution

The fourth proportional to 28,219.38, 38,942.52 and 15,644.10 is: 21,588.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,219.38 : 38,942.52 = 15,644.10 : x
  2. Step 2: Convert to fraction form
    28,219.38/38,942.52 = 15,644.10/x
  3. Step 3: Cross multiply
    28,219.38x = 38,942.52 × 15,644.10
  4. Step 4: Simplify right side
    28,219.38x = 609,220,677.13
  5. Step 5: Solve for x
    x = 609,220,677.13/28,219.38
  6. Step 6: Final answer
    x = 21,588.73

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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.