Home / 11,712.39-16,162.88-6,407.19

Finding the Fourth Proportional to 11,712.39, 16,162.88 and 6,407.19

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Solution

The fourth proportional to 11,712.39, 16,162.88 and 6,407.19 is: 8,841.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.39 : 16,162.88 = 6,407.19 : x
  2. Step 2: Convert to fraction form
    11,712.39/16,162.88 = 6,407.19/x
  3. Step 3: Cross multiply
    11,712.39x = 16,162.88 × 6,407.19
  4. Step 4: Simplify right side
    11,712.39x = 103,558,611.07
  5. Step 5: Solve for x
    x = 103,558,611.07/11,712.39
  6. Step 6: Final answer
    x = 8,841.80

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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.