Home / 19,788.60-29,679.66-7,314.47

Finding the Fourth Proportional to 19,788.60, 29,679.66 and 7,314.47

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Solution

The fourth proportional to 19,788.60, 29,679.66 and 7,314.47 is: 10,970.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,788.60 : 29,679.66 = 7,314.47 : x
  2. Step 2: Convert to fraction form
    19,788.60/29,679.66 = 7,314.47/x
  3. Step 3: Cross multiply
    19,788.60x = 29,679.66 × 7,314.47
  4. Step 4: Simplify right side
    19,788.60x = 217,090,982.68
  5. Step 5: Solve for x
    x = 217,090,982.68/19,788.60
  6. Step 6: Final answer
    x = 10,970.51

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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.