Home / 11,172.86-15,419.21-6,458.66

Finding the Fourth Proportional to 11,172.86, 15,419.21 and 6,458.66

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Solution

The fourth proportional to 11,172.86, 15,419.21 and 6,458.66 is: 8,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,172.86 : 15,419.21 = 6,458.66 : x
  2. Step 2: Convert to fraction form
    11,172.86/15,419.21 = 6,458.66/x
  3. Step 3: Cross multiply
    11,172.86x = 15,419.21 × 6,458.66
  4. Step 4: Simplify right side
    11,172.86x = 99,587,325.47
  5. Step 5: Solve for x
    x = 99,587,325.47/11,172.86
  6. Step 6: Final answer
    x = 8,913.33

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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.