Home / 12,776.95-17,617.10-8,745.72

Finding the Fourth Proportional to 12,776.95, 17,617.10 and 8,745.72

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Solution

The fourth proportional to 12,776.95, 17,617.10 and 8,745.72 is: 12,058.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,776.95 : 17,617.10 = 8,745.72 : x
  2. Step 2: Convert to fraction form
    12,776.95/17,617.10 = 8,745.72/x
  3. Step 3: Cross multiply
    12,776.95x = 17,617.10 × 8,745.72
  4. Step 4: Simplify right side
    12,776.95x = 154,074,245.68
  5. Step 5: Solve for x
    x = 154,074,245.68/12,776.95
  6. Step 6: Final answer
    x = 12,058.77

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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.