Home / 12,843.40-19,263.30-4,079.20

Finding the Fourth Proportional to 12,843.40, 19,263.30 and 4,079.20

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Solution

The fourth proportional to 12,843.40, 19,263.30 and 4,079.20 is: 6,118.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,843.40 : 19,263.30 = 4,079.20 : x
  2. Step 2: Convert to fraction form
    12,843.40/19,263.30 = 4,079.20/x
  3. Step 3: Cross multiply
    12,843.40x = 19,263.30 × 4,079.20
  4. Step 4: Simplify right side
    12,843.40x = 78,578,853.36
  5. Step 5: Solve for x
    x = 78,578,853.36/12,843.40
  6. Step 6: Final answer
    x = 6,118.23

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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.