Home / 21,299.04-31,958.28-10,918.08

Finding the Fourth Proportional to 21,299.04, 31,958.28 and 10,918.08

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Solution

The fourth proportional to 21,299.04, 31,958.28 and 10,918.08 is: 16,382.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,299.04 : 31,958.28 = 10,918.08 : x
  2. Step 2: Convert to fraction form
    21,299.04/31,958.28 = 10,918.08/x
  3. Step 3: Cross multiply
    21,299.04x = 31,958.28 × 10,918.08
  4. Step 4: Simplify right side
    21,299.04x = 348,923,057.70
  5. Step 5: Solve for x
    x = 348,923,057.70/21,299.04
  6. Step 6: Final answer
    x = 16,382.10

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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.