Home / 38,788.26-58,128.15-20,980.46

Finding the Fourth Proportional to 38,788.26, 58,128.15 and 20,980.46

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Solution

The fourth proportional to 38,788.26, 58,128.15 and 20,980.46 is: 31,441.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,788.26 : 58,128.15 = 20,980.46 : x
  2. Step 2: Convert to fraction form
    38,788.26/58,128.15 = 20,980.46/x
  3. Step 3: Cross multiply
    38,788.26x = 58,128.15 × 20,980.46
  4. Step 4: Simplify right side
    38,788.26x = 1,219,555,431.93
  5. Step 5: Solve for x
    x = 1,219,555,431.93/38,788.26
  6. Step 6: Final answer
    x = 31,441.35

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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.