Home / 12,876.78-19,320.30-6,301.20

Finding the Fourth Proportional to 12,876.78, 19,320.30 and 6,301.20

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Solution

The fourth proportional to 12,876.78, 19,320.30 and 6,301.20 is: 9,454.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,876.78 : 19,320.30 = 6,301.20 : x
  2. Step 2: Convert to fraction form
    12,876.78/19,320.30 = 6,301.20/x
  3. Step 3: Cross multiply
    12,876.78x = 19,320.30 × 6,301.20
  4. Step 4: Simplify right side
    12,876.78x = 121,741,074.36
  5. Step 5: Solve for x
    x = 121,741,074.36/12,876.78
  6. Step 6: Final answer
    x = 9,454.31

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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.