Home / 21,110.57-31,669.68-10,017.15

Finding the Fourth Proportional to 21,110.57, 31,669.68 and 10,017.15

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Solution

The fourth proportional to 21,110.57, 31,669.68 and 10,017.15 is: 15,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.57 : 31,669.68 = 10,017.15 : x
  2. Step 2: Convert to fraction form
    21,110.57/31,669.68 = 10,017.15/x
  3. Step 3: Cross multiply
    21,110.57x = 31,669.68 × 10,017.15
  4. Step 4: Simplify right side
    21,110.57x = 317,239,935.01
  5. Step 5: Solve for x
    x = 317,239,935.01/21,110.57
  6. Step 6: Final answer
    x = 15,027.54

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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.