Home / 19,866.17-29,771.31-15,687.79

Finding the Fourth Proportional to 19,866.17, 29,771.31 and 15,687.79

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Solution

The fourth proportional to 19,866.17, 29,771.31 and 15,687.79 is: 23,509.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.17 : 29,771.31 = 15,687.79 : x
  2. Step 2: Convert to fraction form
    19,866.17/29,771.31 = 15,687.79/x
  3. Step 3: Cross multiply
    19,866.17x = 29,771.31 × 15,687.79
  4. Step 4: Simplify right side
    19,866.17x = 467,046,059.30
  5. Step 5: Solve for x
    x = 467,046,059.30/19,866.17
  6. Step 6: Final answer
    x = 23,509.62

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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.