Home / 21,049.56-31,572.09-11,178.36

Finding the Fourth Proportional to 21,049.56, 31,572.09 and 11,178.36

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Solution

The fourth proportional to 21,049.56, 31,572.09 and 11,178.36 is: 16,766.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,049.56 : 31,572.09 = 11,178.36 : x
  2. Step 2: Convert to fraction form
    21,049.56/31,572.09 = 11,178.36/x
  3. Step 3: Cross multiply
    21,049.56x = 31,572.09 × 11,178.36
  4. Step 4: Simplify right side
    21,049.56x = 352,924,187.97
  5. Step 5: Solve for x
    x = 352,924,187.97/21,049.56
  6. Step 6: Final answer
    x = 16,766.35

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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.