Home / 18,708.39-25,816.86-11,154.53

Finding the Fourth Proportional to 18,708.39, 25,816.86 and 11,154.53

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Solution

The fourth proportional to 18,708.39, 25,816.86 and 11,154.53 is: 15,392.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708.39 : 25,816.86 = 11,154.53 : x
  2. Step 2: Convert to fraction form
    18,708.39/25,816.86 = 11,154.53/x
  3. Step 3: Cross multiply
    18,708.39x = 25,816.86 × 11,154.53
  4. Step 4: Simplify right side
    18,708.39x = 287,975,003.92
  5. Step 5: Solve for x
    x = 287,975,003.92/18,708.39
  6. Step 6: Final answer
    x = 15,392.83

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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.