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Finding the Fourth Proportional to 14,136.64, 19,509.24 and 8,169.10

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Solution

The fourth proportional to 14,136.64, 19,509.24 and 8,169.10 is: 11,273.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,136.64 : 19,509.24 = 8,169.10 : x
  2. Step 2: Convert to fraction form
    14,136.64/19,509.24 = 8,169.10/x
  3. Step 3: Cross multiply
    14,136.64x = 19,509.24 × 8,169.10
  4. Step 4: Simplify right side
    14,136.64x = 159,372,932.48
  5. Step 5: Solve for x
    x = 159,372,932.48/14,136.64
  6. Step 6: Final answer
    x = 11,273.75

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Double scale
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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.