Home / 21,021.04-31,531.45-9,011.43

Finding the Fourth Proportional to 21,021.04, 31,531.45 and 9,011.43

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Solution

The fourth proportional to 21,021.04, 31,531.45 and 9,011.43 is: 13,517.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,021.04 : 31,531.45 = 9,011.43 : x
  2. Step 2: Convert to fraction form
    21,021.04/31,531.45 = 9,011.43/x
  3. Step 3: Cross multiply
    21,021.04x = 31,531.45 × 9,011.43
  4. Step 4: Simplify right side
    21,021.04x = 284,143,251.76
  5. Step 5: Solve for x
    x = 284,143,251.76/21,021.04
  6. Step 6: Final answer
    x = 13,517.09

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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.