Home / 12,115.72-16,714.95-8,936.57

Finding the Fourth Proportional to 12,115.72, 16,714.95 and 8,936.57

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Solution

The fourth proportional to 12,115.72, 16,714.95 and 8,936.57 is: 12,328.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.72 : 16,714.95 = 8,936.57 : x
  2. Step 2: Convert to fraction form
    12,115.72/16,714.95 = 8,936.57/x
  3. Step 3: Cross multiply
    12,115.72x = 16,714.95 × 8,936.57
  4. Step 4: Simplify right side
    12,115.72x = 149,374,320.72
  5. Step 5: Solve for x
    x = 149,374,320.72/12,115.72
  6. Step 6: Final answer
    x = 12,328.97

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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.