Home / 11,142.53-15,376.24-6,663.64

Finding the Fourth Proportional to 11,142.53, 15,376.24 and 6,663.64

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Solution

The fourth proportional to 11,142.53, 15,376.24 and 6,663.64 is: 9,195.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.53 : 15,376.24 = 6,663.64 : x
  2. Step 2: Convert to fraction form
    11,142.53/15,376.24 = 6,663.64/x
  3. Step 3: Cross multiply
    11,142.53x = 15,376.24 × 6,663.64
  4. Step 4: Simplify right side
    11,142.53x = 102,461,727.91
  5. Step 5: Solve for x
    x = 102,461,727.91/11,142.53
  6. Step 6: Final answer
    x = 9,195.55

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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.