Home / 25,398.56-38,105.40-7,869.68

Finding the Fourth Proportional to 25,398.56, 38,105.40 and 7,869.68

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Solution

The fourth proportional to 25,398.56, 38,105.40 and 7,869.68 is: 11,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,398.56 : 38,105.40 = 7,869.68 : x
  2. Step 2: Convert to fraction form
    25,398.56/38,105.40 = 7,869.68/x
  3. Step 3: Cross multiply
    25,398.56x = 38,105.40 × 7,869.68
  4. Step 4: Simplify right side
    25,398.56x = 299,877,304.27
  5. Step 5: Solve for x
    x = 299,877,304.27/25,398.56
  6. Step 6: Final answer
    x = 11,806.86

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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.