Home / 12,863.78-19,319.42-7,701.38

Finding the Fourth Proportional to 12,863.78, 19,319.42 and 7,701.38

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Solution

The fourth proportional to 12,863.78, 19,319.42 and 7,701.38 is: 11,566.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.78 : 19,319.42 = 7,701.38 : x
  2. Step 2: Convert to fraction form
    12,863.78/19,319.42 = 7,701.38/x
  3. Step 3: Cross multiply
    12,863.78x = 19,319.42 × 7,701.38
  4. Step 4: Simplify right side
    12,863.78x = 148,786,117.46
  5. Step 5: Solve for x
    x = 148,786,117.46/12,863.78
  6. Step 6: Final answer
    x = 11,566.29

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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.