Home / 21,222.11-31,810.97-11,848.38

Finding the Fourth Proportional to 21,222.11, 31,810.97 and 11,848.38

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Solution

The fourth proportional to 21,222.11, 31,810.97 and 11,848.38 is: 17,760.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.11 : 31,810.97 = 11,848.38 : x
  2. Step 2: Convert to fraction form
    21,222.11/31,810.97 = 11,848.38/x
  3. Step 3: Cross multiply
    21,222.11x = 31,810.97 × 11,848.38
  4. Step 4: Simplify right side
    21,222.11x = 376,908,401.49
  5. Step 5: Solve for x
    x = 376,908,401.49/21,222.11
  6. Step 6: Final answer
    x = 17,760.18

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1.5x scale

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.