Home / 29,243.72-40,356.31-15,815.01

Finding the Fourth Proportional to 29,243.72, 40,356.31 and 15,815.01

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Solution

The fourth proportional to 29,243.72, 40,356.31 and 15,815.01 is: 21,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,243.72 : 40,356.31 = 15,815.01 : x
  2. Step 2: Convert to fraction form
    29,243.72/40,356.31 = 15,815.01/x
  3. Step 3: Cross multiply
    29,243.72x = 40,356.31 × 15,815.01
  4. Step 4: Simplify right side
    29,243.72x = 638,235,446.21
  5. Step 5: Solve for x
    x = 638,235,446.21/29,243.72
  6. Step 6: Final answer
    x = 21,824.70

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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.