Home / 21,269.79-31,856.04-10,184.31

Finding the Fourth Proportional to 21,269.79, 31,856.04 and 10,184.31

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Solution

The fourth proportional to 21,269.79, 31,856.04 and 10,184.31 is: 15,253.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,269.79 : 31,856.04 = 10,184.31 : x
  2. Step 2: Convert to fraction form
    21,269.79/31,856.04 = 10,184.31/x
  3. Step 3: Cross multiply
    21,269.79x = 31,856.04 × 10,184.31
  4. Step 4: Simplify right side
    21,269.79x = 324,431,786.73
  5. Step 5: Solve for x
    x = 324,431,786.73/21,269.79
  6. Step 6: Final answer
    x = 15,253.17

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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.