Home / 11,431.48-15,776.18-6,396.16

Finding the Fourth Proportional to 11,431.48, 15,776.18 and 6,396.16

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Solution

The fourth proportional to 11,431.48, 15,776.18 and 6,396.16 is: 8,827.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,431.48 : 15,776.18 = 6,396.16 : x
  2. Step 2: Convert to fraction form
    11,431.48/15,776.18 = 6,396.16/x
  3. Step 3: Cross multiply
    11,431.48x = 15,776.18 × 6,396.16
  4. Step 4: Simplify right side
    11,431.48x = 100,906,971.47
  5. Step 5: Solve for x
    x = 100,906,971.47/11,431.48
  6. Step 6: Final answer
    x = 8,827.11

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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.