Home / 18,780.54-25,914-11,229.93

Finding the Fourth Proportional to 18,780.54, 25,914 and 11,229.93

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Solution

The fourth proportional to 18,780.54, 25,914 and 11,229.93 is: 15,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,780.54 : 25,914 = 11,229.93 : x
  2. Step 2: Convert to fraction form
    18,780.54/25,914 = 11,229.93/x
  3. Step 3: Cross multiply
    18,780.54x = 25,914 × 11,229.93
  4. Step 4: Simplify right side
    18,780.54x = 291,012,406.02
  5. Step 5: Solve for x
    x = 291,012,406.02/18,780.54
  6. Step 6: Final answer
    x = 15,495.42

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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.