Home / 21,398.89-32,098.41-5,816.51

Finding the Fourth Proportional to 21,398.89, 32,098.41 and 5,816.51

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Solution

The fourth proportional to 21,398.89, 32,098.41 and 5,816.51 is: 8,724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,398.89 : 32,098.41 = 5,816.51 : x
  2. Step 2: Convert to fraction form
    21,398.89/32,098.41 = 5,816.51/x
  3. Step 3: Cross multiply
    21,398.89x = 32,098.41 × 5,816.51
  4. Step 4: Simplify right side
    21,398.89x = 186,700,722.75
  5. Step 5: Solve for x
    x = 186,700,722.75/21,398.89
  6. Step 6: Final answer
    x = 8,724.79

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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.