Home / 28,775.58-43,115.84-13,158.78

Finding the Fourth Proportional to 28,775.58, 43,115.84 and 13,158.78

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Solution

The fourth proportional to 28,775.58, 43,115.84 and 13,158.78 is: 19,716.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,775.58 : 43,115.84 = 13,158.78 : x
  2. Step 2: Convert to fraction form
    28,775.58/43,115.84 = 13,158.78/x
  3. Step 3: Cross multiply
    28,775.58x = 43,115.84 × 13,158.78
  4. Step 4: Simplify right side
    28,775.58x = 567,351,853.08
  5. Step 5: Solve for x
    x = 567,351,853.08/28,775.58
  6. Step 6: Final answer
    x = 19,716.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.