Home / 18,357.71-25,333.61-11,187.62

Finding the Fourth Proportional to 18,357.71, 25,333.61 and 11,187.62

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Solution

The fourth proportional to 18,357.71, 25,333.61 and 11,187.62 is: 15,438.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,357.71 : 25,333.61 = 11,187.62 : x
  2. Step 2: Convert to fraction form
    18,357.71/25,333.61 = 11,187.62/x
  3. Step 3: Cross multiply
    18,357.71x = 25,333.61 × 11,187.62
  4. Step 4: Simplify right side
    18,357.71x = 283,422,619.30
  5. Step 5: Solve for x
    x = 283,422,619.30/18,357.71
  6. Step 6: Final answer
    x = 15,438.89

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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.