Home / 39,086.66-53,939.76-21,181.70

Finding the Fourth Proportional to 39,086.66, 53,939.76 and 21,181.70

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Solution

The fourth proportional to 39,086.66, 53,939.76 and 21,181.70 is: 29,230.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,086.66 : 53,939.76 = 21,181.70 : x
  2. Step 2: Convert to fraction form
    39,086.66/53,939.76 = 21,181.70/x
  3. Step 3: Cross multiply
    39,086.66x = 53,939.76 × 21,181.70
  4. Step 4: Simplify right side
    39,086.66x = 1,142,535,814.39
  5. Step 5: Solve for x
    x = 1,142,535,814.39/39,086.66
  6. Step 6: Final answer
    x = 29,230.84

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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.