Home / 38,501.20-57,708.60-21,869.20

Finding the Fourth Proportional to 38,501.20, 57,708.60 and 21,869.20

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Solution

The fourth proportional to 38,501.20, 57,708.60 and 21,869.20 is: 32,779.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,501.20 : 57,708.60 = 21,869.20 : x
  2. Step 2: Convert to fraction form
    38,501.20/57,708.60 = 21,869.20/x
  3. Step 3: Cross multiply
    38,501.20x = 57,708.60 × 21,869.20
  4. Step 4: Simplify right side
    38,501.20x = 1,262,040,915.12
  5. Step 5: Solve for x
    x = 1,262,040,915.12/38,501.20
  6. Step 6: Final answer
    x = 32,779.26

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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.