Home / 18,438.27-25,437.59-11,352.39

Finding the Fourth Proportional to 18,438.27, 25,437.59 and 11,352.39

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Solution

The fourth proportional to 18,438.27, 25,437.59 and 11,352.39 is: 15,661.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,438.27 : 25,437.59 = 11,352.39 : x
  2. Step 2: Convert to fraction form
    18,438.27/25,437.59 = 11,352.39/x
  3. Step 3: Cross multiply
    18,438.27x = 25,437.59 × 11,352.39
  4. Step 4: Simplify right side
    18,438.27x = 288,777,258.39
  5. Step 5: Solve for x
    x = 288,777,258.39/18,438.27
  6. Step 6: Final answer
    x = 15,661.85

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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.