Home / 38,997.81-53,816.94-21,092.90

Finding the Fourth Proportional to 38,997.81, 53,816.94 and 21,092.90

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Solution

The fourth proportional to 38,997.81, 53,816.94 and 21,092.90 is: 29,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,997.81 : 53,816.94 = 21,092.90 : x
  2. Step 2: Convert to fraction form
    38,997.81/53,816.94 = 21,092.90/x
  3. Step 3: Cross multiply
    38,997.81x = 53,816.94 × 21,092.90
  4. Step 4: Simplify right side
    38,997.81x = 1,135,155,064.64
  5. Step 5: Solve for x
    x = 1,135,155,064.64/38,997.81
  6. Step 6: Final answer
    x = 29,108.17

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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.