Home / 12,780.26-19,175.15-5,758.17

Finding the Fourth Proportional to 12,780.26, 19,175.15 and 5,758.17

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Solution

The fourth proportional to 12,780.26, 19,175.15 and 5,758.17 is: 8,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780.26 : 19,175.15 = 5,758.17 : x
  2. Step 2: Convert to fraction form
    12,780.26/19,175.15 = 5,758.17/x
  3. Step 3: Cross multiply
    12,780.26x = 19,175.15 × 5,758.17
  4. Step 4: Simplify right side
    12,780.26x = 110,413,773.48
  5. Step 5: Solve for x
    x = 110,413,773.48/12,780.26
  6. Step 6: Final answer
    x = 8,639.40

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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.