Home / 21,325.56-31,945.50-10,619.66

Finding the Fourth Proportional to 21,325.56, 31,945.50 and 10,619.66

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Solution

The fourth proportional to 21,325.56, 31,945.50 and 10,619.66 is: 15,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.56 : 31,945.50 = 10,619.66 : x
  2. Step 2: Convert to fraction form
    21,325.56/31,945.50 = 10,619.66/x
  3. Step 3: Cross multiply
    21,325.56x = 31,945.50 × 10,619.66
  4. Step 4: Simplify right side
    21,325.56x = 339,250,188.80
  5. Step 5: Solve for x
    x = 339,250,188.80/21,325.56
  6. Step 6: Final answer
    x = 15,908.15

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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.