Home / 28,247.78-38,982.29-15,500.14

Finding the Fourth Proportional to 28,247.78, 38,982.29 and 15,500.14

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Solution

The fourth proportional to 28,247.78, 38,982.29 and 15,500.14 is: 21,390.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,247.78 : 38,982.29 = 15,500.14 : x
  2. Step 2: Convert to fraction form
    28,247.78/38,982.29 = 15,500.14/x
  3. Step 3: Cross multiply
    28,247.78x = 38,982.29 × 15,500.14
  4. Step 4: Simplify right side
    28,247.78x = 604,230,777.56
  5. Step 5: Solve for x
    x = 604,230,777.56/28,247.78
  6. Step 6: Final answer
    x = 21,390.38

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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.