Home / 12,872.82-19,307.40-4,979.06

Finding the Fourth Proportional to 12,872.82, 19,307.40 and 4,979.06

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Solution

The fourth proportional to 12,872.82, 19,307.40 and 4,979.06 is: 7,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,872.82 : 19,307.40 = 4,979.06 : x
  2. Step 2: Convert to fraction form
    12,872.82/19,307.40 = 4,979.06/x
  3. Step 3: Cross multiply
    12,872.82x = 19,307.40 × 4,979.06
  4. Step 4: Simplify right side
    12,872.82x = 96,132,703.04
  5. Step 5: Solve for x
    x = 96,132,703.04/12,872.82
  6. Step 6: Final answer
    x = 7,467.88

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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.