Home / 18,112.40-25,001.28-11,409.24

Finding the Fourth Proportional to 18,112.40, 25,001.28 and 11,409.24

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Solution

The fourth proportional to 18,112.40, 25,001.28 and 11,409.24 is: 15,748.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,112.40 : 25,001.28 = 11,409.24 : x
  2. Step 2: Convert to fraction form
    18,112.40/25,001.28 = 11,409.24/x
  3. Step 3: Cross multiply
    18,112.40x = 25,001.28 × 11,409.24
  4. Step 4: Simplify right side
    18,112.40x = 285,245,603.83
  5. Step 5: Solve for x
    x = 285,245,603.83/18,112.40
  6. Step 6: Final answer
    x = 15,748.64

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1.5x scale

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.