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Finding the Fourth Proportional to 18,832.48, 28,248.76 and 7,731.44

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Solution

The fourth proportional to 18,832.48, 28,248.76 and 7,731.44 is: 11,597.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,832.48 : 28,248.76 = 7,731.44 : x
  2. Step 2: Convert to fraction form
    18,832.48/28,248.76 = 7,731.44/x
  3. Step 3: Cross multiply
    18,832.48x = 28,248.76 × 7,731.44
  4. Step 4: Simplify right side
    18,832.48x = 218,403,593.01
  5. Step 5: Solve for x
    x = 218,403,593.01/18,832.48
  6. Step 6: Final answer
    x = 11,597.18

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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.