Home / 21,110.75-31,666.11-10,011.39

Finding the Fourth Proportional to 21,110.75, 31,666.11 and 10,011.39

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Solution

The fourth proportional to 21,110.75, 31,666.11 and 10,011.39 is: 15,017.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,110.75 : 31,666.11 = 10,011.39 : x
  2. Step 2: Convert to fraction form
    21,110.75/31,666.11 = 10,011.39/x
  3. Step 3: Cross multiply
    21,110.75x = 31,666.11 × 10,011.39
  4. Step 4: Simplify right side
    21,110.75x = 317,021,776.99
  5. Step 5: Solve for x
    x = 317,021,776.99/21,110.75
  6. Step 6: Final answer
    x = 15,017.08

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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.