Home / 18,639.10-25,721.76-10,141.48

Finding the Fourth Proportional to 18,639.10, 25,721.76 and 10,141.48

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Solution

The fourth proportional to 18,639.10, 25,721.76 and 10,141.48 is: 13,995.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.10 : 25,721.76 = 10,141.48 : x
  2. Step 2: Convert to fraction form
    18,639.10/25,721.76 = 10,141.48/x
  3. Step 3: Cross multiply
    18,639.10x = 25,721.76 × 10,141.48
  4. Step 4: Simplify right side
    18,639.10x = 260,856,714.60
  5. Step 5: Solve for x
    x = 260,856,714.60/18,639.10
  6. Step 6: Final answer
    x = 13,995.13

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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.