Home / 21,242.43-31,867.90-11,895.74

Finding the Fourth Proportional to 21,242.43, 31,867.90 and 11,895.74

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Solution

The fourth proportional to 21,242.43, 31,867.90 and 11,895.74 is: 17,846.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.43 : 31,867.90 = 11,895.74 : x
  2. Step 2: Convert to fraction form
    21,242.43/31,867.90 = 11,895.74/x
  3. Step 3: Cross multiply
    21,242.43x = 31,867.90 × 11,895.74
  4. Step 4: Simplify right side
    21,242.43x = 379,092,362.16
  5. Step 5: Solve for x
    x = 379,092,362.16/21,242.43
  6. Step 6: Final answer
    x = 17,846.00

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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.