Home / 19,816.96-29,729.18-7,971.68

Finding the Fourth Proportional to 19,816.96, 29,729.18 and 7,971.68

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Solution

The fourth proportional to 19,816.96, 29,729.18 and 7,971.68 is: 11,959.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,816.96 : 29,729.18 = 7,971.68 : x
  2. Step 2: Convert to fraction form
    19,816.96/29,729.18 = 7,971.68/x
  3. Step 3: Cross multiply
    19,816.96x = 29,729.18 × 7,971.68
  4. Step 4: Simplify right side
    19,816.96x = 236,991,509.62
  5. Step 5: Solve for x
    x = 236,991,509.62/19,816.96
  6. Step 6: Final answer
    x = 11,959.02

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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.