Home / 18,388.13-25,375.61-10,004.69

Finding the Fourth Proportional to 18,388.13, 25,375.61 and 10,004.69

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Solution

The fourth proportional to 18,388.13, 25,375.61 and 10,004.69 is: 13,806.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.13 : 25,375.61 = 10,004.69 : x
  2. Step 2: Convert to fraction form
    18,388.13/25,375.61 = 10,004.69/x
  3. Step 3: Cross multiply
    18,388.13x = 25,375.61 × 10,004.69
  4. Step 4: Simplify right side
    18,388.13x = 253,875,009.74
  5. Step 5: Solve for x
    x = 253,875,009.74/18,388.13
  6. Step 6: Final answer
    x = 13,806.47

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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.