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Finding the Fourth Proportional to 28,090.92, 42,136.37 and 8,368.97

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Solution

The fourth proportional to 28,090.92, 42,136.37 and 8,368.97 is: 12,553.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,090.92 : 42,136.37 = 8,368.97 : x
  2. Step 2: Convert to fraction form
    28,090.92/42,136.37 = 8,368.97/x
  3. Step 3: Cross multiply
    28,090.92x = 42,136.37 × 8,368.97
  4. Step 4: Simplify right side
    28,090.92x = 352,637,763.91
  5. Step 5: Solve for x
    x = 352,637,763.91/28,090.92
  6. Step 6: Final answer
    x = 12,553.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.