Home / 11,433.36-15,778.88-6,398.08

Finding the Fourth Proportional to 11,433.36, 15,778.88 and 6,398.08

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Solution

The fourth proportional to 11,433.36, 15,778.88 and 6,398.08 is: 8,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,433.36 : 15,778.88 = 6,398.08 : x
  2. Step 2: Convert to fraction form
    11,433.36/15,778.88 = 6,398.08/x
  3. Step 3: Cross multiply
    11,433.36x = 15,778.88 × 6,398.08
  4. Step 4: Simplify right side
    11,433.36x = 100,954,536.55
  5. Step 5: Solve for x
    x = 100,954,536.55/11,433.36
  6. Step 6: Final answer
    x = 8,829.82

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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.