Home / 11,508.21-15,881.09-6,403.62

Finding the Fourth Proportional to 11,508.21, 15,881.09 and 6,403.62

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Solution

The fourth proportional to 11,508.21, 15,881.09 and 6,403.62 is: 8,836.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.21 : 15,881.09 = 6,403.62 : x
  2. Step 2: Convert to fraction form
    11,508.21/15,881.09 = 6,403.62/x
  3. Step 3: Cross multiply
    11,508.21x = 15,881.09 × 6,403.62
  4. Step 4: Simplify right side
    11,508.21x = 101,696,465.55
  5. Step 5: Solve for x
    x = 101,696,465.55/11,508.21
  6. Step 6: Final answer
    x = 8,836.86

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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.