Home / 12,780.80-19,175.24-4,016.60

Finding the Fourth Proportional to 12,780.80, 19,175.24 and 4,016.60

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Solution

The fourth proportional to 12,780.80, 19,175.24 and 4,016.60 is: 6,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.80 : 19,175.24 = 4,016.60 : x
  2. Step 2: Convert to fraction form
    12,780.80/19,175.24 = 4,016.60/x
  3. Step 3: Cross multiply
    12,780.80x = 19,175.24 × 4,016.60
  4. Step 4: Simplify right side
    12,780.80x = 77,019,268.98
  5. Step 5: Solve for x
    x = 77,019,268.98/12,780.80
  6. Step 6: Final answer
    x = 6,026.17

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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.