Home / 12,639.85-17,443.16-6,974.83

Finding the Fourth Proportional to 12,639.85, 17,443.16 and 6,974.83

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Solution

The fourth proportional to 12,639.85, 17,443.16 and 6,974.83 is: 9,625.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.85 : 17,443.16 = 6,974.83 : x
  2. Step 2: Convert to fraction form
    12,639.85/17,443.16 = 6,974.83/x
  3. Step 3: Cross multiply
    12,639.85x = 17,443.16 × 6,974.83
  4. Step 4: Simplify right side
    12,639.85x = 121,663,075.66
  5. Step 5: Solve for x
    x = 121,663,075.66/12,639.85
  6. Step 6: Final answer
    x = 9,625.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.