Home / 39,086.19-53,939.13-21,181.17

Finding the Fourth Proportional to 39,086.19, 53,939.13 and 21,181.17

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Solution

The fourth proportional to 39,086.19, 53,939.13 and 21,181.17 is: 29,230.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,086.19 : 53,939.13 = 21,181.17 : x
  2. Step 2: Convert to fraction form
    39,086.19/53,939.13 = 21,181.17/x
  3. Step 3: Cross multiply
    39,086.19x = 53,939.13 × 21,181.17
  4. Step 4: Simplify right side
    39,086.19x = 1,142,493,882.18
  5. Step 5: Solve for x
    x = 1,142,493,882.18/39,086.19
  6. Step 6: Final answer
    x = 29,230.12

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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.