Home / 38,991.47-53,807.94-21,086.21

Finding the Fourth Proportional to 38,991.47, 53,807.94 and 21,086.21

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Solution

The fourth proportional to 38,991.47, 53,807.94 and 21,086.21 is: 29,098.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.47 : 53,807.94 = 21,086.21 : x
  2. Step 2: Convert to fraction form
    38,991.47/53,807.94 = 21,086.21/x
  3. Step 3: Cross multiply
    38,991.47x = 53,807.94 × 21,086.21
  4. Step 4: Simplify right side
    38,991.47x = 1,134,605,253.47
  5. Step 5: Solve for x
    x = 1,134,605,253.47/38,991.47
  6. Step 6: Final answer
    x = 29,098.81

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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.