Home / 21,431.05-32,151.17-10,902.54

Finding the Fourth Proportional to 21,431.05, 32,151.17 and 10,902.54

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Solution

The fourth proportional to 21,431.05, 32,151.17 and 10,902.54 is: 16,356.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,431.05 : 32,151.17 = 10,902.54 : x
  2. Step 2: Convert to fraction form
    21,431.05/32,151.17 = 10,902.54/x
  3. Step 3: Cross multiply
    21,431.05x = 32,151.17 × 10,902.54
  4. Step 4: Simplify right side
    21,431.05x = 350,529,416.97
  5. Step 5: Solve for x
    x = 350,529,416.97/21,431.05
  6. Step 6: Final answer
    x = 16,356.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.