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Finding the Fourth Proportional to 10,357.96, 15,538.48 and 4,811.88

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Solution

The fourth proportional to 10,357.96, 15,538.48 and 4,811.88 is: 7,218.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,357.96 : 15,538.48 = 4,811.88 : x
  2. Step 2: Convert to fraction form
    10,357.96/15,538.48 = 4,811.88/x
  3. Step 3: Cross multiply
    10,357.96x = 15,538.48 × 4,811.88
  4. Step 4: Simplify right side
    10,357.96x = 74,769,301.14
  5. Step 5: Solve for x
    x = 74,769,301.14/10,357.96
  6. Step 6: Final answer
    x = 7,218.54

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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.