Home / 21,110.67-31,665.99-10,011.31

Finding the Fourth Proportional to 21,110.67, 31,665.99 and 10,011.31

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Solution

The fourth proportional to 21,110.67, 31,665.99 and 10,011.31 is: 15,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.67 : 31,665.99 = 10,011.31 : x
  2. Step 2: Convert to fraction form
    21,110.67/31,665.99 = 10,011.31/x
  3. Step 3: Cross multiply
    21,110.67x = 31,665.99 × 10,011.31
  4. Step 4: Simplify right side
    21,110.67x = 317,018,000.72
  5. Step 5: Solve for x
    x = 317,018,000.72/21,110.67
  6. Step 6: Final answer
    x = 15,016.96

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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.