Home / 21,260.24-31,869.54-7,923.47

Finding the Fourth Proportional to 21,260.24, 31,869.54 and 7,923.47

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Solution

The fourth proportional to 21,260.24, 31,869.54 and 7,923.47 is: 11,877.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.24 : 31,869.54 = 7,923.47 : x
  2. Step 2: Convert to fraction form
    21,260.24/31,869.54 = 7,923.47/x
  3. Step 3: Cross multiply
    21,260.24x = 31,869.54 × 7,923.47
  4. Step 4: Simplify right side
    21,260.24x = 252,517,344.10
  5. Step 5: Solve for x
    x = 252,517,344.10/21,260.24
  6. Step 6: Final answer
    x = 11,877.45

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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.