Home / 15,890.75-21,932.64-10,866.79

Finding the Fourth Proportional to 15,890.75, 21,932.64 and 10,866.79

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Solution

The fourth proportional to 15,890.75, 21,932.64 and 10,866.79 is: 14,998.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,890.75 : 21,932.64 = 10,866.79 : x
  2. Step 2: Convert to fraction form
    15,890.75/21,932.64 = 10,866.79/x
  3. Step 3: Cross multiply
    15,890.75x = 21,932.64 × 10,866.79
  4. Step 4: Simplify right side
    15,890.75x = 238,337,420.44
  5. Step 5: Solve for x
    x = 238,337,420.44/15,890.75
  6. Step 6: Final answer
    x = 14,998.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.