Home / 12,108.91-16,725.80-9,258.99

Finding the Fourth Proportional to 12,108.91, 16,725.80 and 9,258.99

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Solution

The fourth proportional to 12,108.91, 16,725.80 and 9,258.99 is: 12,789.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.91 : 16,725.80 = 9,258.99 : x
  2. Step 2: Convert to fraction form
    12,108.91/16,725.80 = 9,258.99/x
  3. Step 3: Cross multiply
    12,108.91x = 16,725.80 × 9,258.99
  4. Step 4: Simplify right side
    12,108.91x = 154,864,014.94
  5. Step 5: Solve for x
    x = 154,864,014.94/12,108.91
  6. Step 6: Final answer
    x = 12,789.26

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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.