Home / 12,780.87-19,171.98-4,016.47

Finding the Fourth Proportional to 12,780.87, 19,171.98 and 4,016.47

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Solution

The fourth proportional to 12,780.87, 19,171.98 and 4,016.47 is: 6,024.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.87 : 19,171.98 = 4,016.47 : x
  2. Step 2: Convert to fraction form
    12,780.87/19,171.98 = 4,016.47/x
  3. Step 3: Cross multiply
    12,780.87x = 19,171.98 × 4,016.47
  4. Step 4: Simplify right side
    12,780.87x = 77,003,566.57
  5. Step 5: Solve for x
    x = 77,003,566.57/12,780.87
  6. Step 6: Final answer
    x = 6,024.91

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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.