Home / 21,451.05-32,174.60-7,409.79

Finding the Fourth Proportional to 21,451.05, 32,174.60 and 7,409.79

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Solution

The fourth proportional to 21,451.05, 32,174.60 and 7,409.79 is: 11,114.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,451.05 : 32,174.60 = 7,409.79 : x
  2. Step 2: Convert to fraction form
    21,451.05/32,174.60 = 7,409.79/x
  3. Step 3: Cross multiply
    21,451.05x = 32,174.60 × 7,409.79
  4. Step 4: Simplify right side
    21,451.05x = 238,406,992.29
  5. Step 5: Solve for x
    x = 238,406,992.29/21,451.05
  6. Step 6: Final answer
    x = 11,114.00

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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.