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Finding the Fourth Proportional to 25,930.68, 35,832.78 and 21,213.24

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Solution

The fourth proportional to 25,930.68, 35,832.78 and 21,213.24 is: 29,313.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,930.68 : 35,832.78 = 21,213.24 : x
  2. Step 2: Convert to fraction form
    25,930.68/35,832.78 = 21,213.24/x
  3. Step 3: Cross multiply
    25,930.68x = 35,832.78 × 21,213.24
  4. Step 4: Simplify right side
    25,930.68x = 760,129,362.01
  5. Step 5: Solve for x
    x = 760,129,362.01/25,930.68
  6. Step 6: Final answer
    x = 29,313.90

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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.