Home / 12,904.22-17,811.60-8,428.66

Finding the Fourth Proportional to 12,904.22, 17,811.60 and 8,428.66

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Solution

The fourth proportional to 12,904.22, 17,811.60 and 8,428.66 is: 11,634.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,904.22 : 17,811.60 = 8,428.66 : x
  2. Step 2: Convert to fraction form
    12,904.22/17,811.60 = 8,428.66/x
  3. Step 3: Cross multiply
    12,904.22x = 17,811.60 × 8,428.66
  4. Step 4: Simplify right side
    12,904.22x = 150,127,920.46
  5. Step 5: Solve for x
    x = 150,127,920.46/12,904.22
  6. Step 6: Final answer
    x = 11,634.02

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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.