Home / 10,419.48-15,621.66-4,869.72

Finding the Fourth Proportional to 10,419.48, 15,621.66 and 4,869.72

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Solution

The fourth proportional to 10,419.48, 15,621.66 and 4,869.72 is: 7,301.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,419.48 : 15,621.66 = 4,869.72 : x
  2. Step 2: Convert to fraction form
    10,419.48/15,621.66 = 4,869.72/x
  3. Step 3: Cross multiply
    10,419.48x = 15,621.66 × 4,869.72
  4. Step 4: Simplify right side
    10,419.48x = 76,073,110.14
  5. Step 5: Solve for x
    x = 76,073,110.14/10,419.48
  6. Step 6: Final answer
    x = 7,301.05

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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.