Home / 12,215.72-16,865.25-9,377.66

Finding the Fourth Proportional to 12,215.72, 16,865.25 and 9,377.66

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Solution

The fourth proportional to 12,215.72, 16,865.25 and 9,377.66 is: 12,946.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.72 : 16,865.25 = 9,377.66 : x
  2. Step 2: Convert to fraction form
    12,215.72/16,865.25 = 9,377.66/x
  3. Step 3: Cross multiply
    12,215.72x = 16,865.25 × 9,377.66
  4. Step 4: Simplify right side
    12,215.72x = 158,156,580.32
  5. Step 5: Solve for x
    x = 158,156,580.32/12,215.72
  6. Step 6: Final answer
    x = 12,946.97

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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.