Home / 18,248.72-25,178.92-11,078.45

Finding the Fourth Proportional to 18,248.72, 25,178.92 and 11,078.45

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Solution

The fourth proportional to 18,248.72, 25,178.92 and 11,078.45 is: 15,285.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,248.72 : 25,178.92 = 11,078.45 : x
  2. Step 2: Convert to fraction form
    18,248.72/25,178.92 = 11,078.45/x
  3. Step 3: Cross multiply
    18,248.72x = 25,178.92 × 11,078.45
  4. Step 4: Simplify right side
    18,248.72x = 278,943,406.27
  5. Step 5: Solve for x
    x = 278,943,406.27/18,248.72
  6. Step 6: Final answer
    x = 15,285.64

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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.