Home / 18,388.87-25,377.61-13,904.92

Finding the Fourth Proportional to 18,388.87, 25,377.61 and 13,904.92

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Solution

The fourth proportional to 18,388.87, 25,377.61 and 13,904.92 is: 19,189.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,388.87 : 25,377.61 = 13,904.92 : x
  2. Step 2: Convert to fraction form
    18,388.87/25,377.61 = 13,904.92/x
  3. Step 3: Cross multiply
    18,388.87x = 25,377.61 × 13,904.92
  4. Step 4: Simplify right side
    18,388.87x = 352,873,636.84
  5. Step 5: Solve for x
    x = 352,873,636.84/18,388.87
  6. Step 6: Final answer
    x = 19,189.52

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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.