Home / 12,407.19-17,121.01-8,208.15

Finding the Fourth Proportional to 12,407.19, 17,121.01 and 8,208.15

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Solution

The fourth proportional to 12,407.19, 17,121.01 and 8,208.15 is: 11,326.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,407.19 : 17,121.01 = 8,208.15 : x
  2. Step 2: Convert to fraction form
    12,407.19/17,121.01 = 8,208.15/x
  3. Step 3: Cross multiply
    12,407.19x = 17,121.01 × 8,208.15
  4. Step 4: Simplify right side
    12,407.19x = 140,531,818.23
  5. Step 5: Solve for x
    x = 140,531,818.23/12,407.19
  6. Step 6: Final answer
    x = 11,326.64

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Half scale
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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.