Home / 21,921.45-32,861.34-7,119.99

Finding the Fourth Proportional to 21,921.45, 32,861.34 and 7,119.99

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Solution

The fourth proportional to 21,921.45, 32,861.34 and 7,119.99 is: 10,673.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,921.45 : 32,861.34 = 7,119.99 : x
  2. Step 2: Convert to fraction form
    21,921.45/32,861.34 = 7,119.99/x
  3. Step 3: Cross multiply
    21,921.45x = 32,861.34 × 7,119.99
  4. Step 4: Simplify right side
    21,921.45x = 233,972,412.19
  5. Step 5: Solve for x
    x = 233,972,412.19/21,921.45
  6. Step 6: Final answer
    x = 10,673.22

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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.