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Finding the Fourth Proportional to 28,136.16, 38,828.16 and 16,203.24

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Solution

The fourth proportional to 28,136.16, 38,828.16 and 16,203.24 is: 22,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,136.16 : 38,828.16 = 16,203.24 : x
  2. Step 2: Convert to fraction form
    28,136.16/38,828.16 = 16,203.24/x
  3. Step 3: Cross multiply
    28,136.16x = 38,828.16 × 16,203.24
  4. Step 4: Simplify right side
    28,136.16x = 629,141,995.24
  5. Step 5: Solve for x
    x = 629,141,995.24/28,136.16
  6. Step 6: Final answer
    x = 22,360.62

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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.