Home / 12,775.12-19,158.26-4,879.88

Finding the Fourth Proportional to 12,775.12, 19,158.26 and 4,879.88

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Solution

The fourth proportional to 12,775.12, 19,158.26 and 4,879.88 is: 7,318.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,775.12 : 19,158.26 = 4,879.88 : x
  2. Step 2: Convert to fraction form
    12,775.12/19,158.26 = 4,879.88/x
  3. Step 3: Cross multiply
    12,775.12x = 19,158.26 × 4,879.88
  4. Step 4: Simplify right side
    12,775.12x = 93,489,961.46
  5. Step 5: Solve for x
    x = 93,489,961.46/12,775.12
  6. Step 6: Final answer
    x = 7,318.13

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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.