Home / 39,018.35-53,845.22-21,113.66

Finding the Fourth Proportional to 39,018.35, 53,845.22 and 21,113.66

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Solution

The fourth proportional to 39,018.35, 53,845.22 and 21,113.66 is: 29,136.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,018.35 : 53,845.22 = 21,113.66 : x
  2. Step 2: Convert to fraction form
    39,018.35/53,845.22 = 21,113.66/x
  3. Step 3: Cross multiply
    39,018.35x = 53,845.22 × 21,113.66
  4. Step 4: Simplify right side
    39,018.35x = 1,136,869,562.14
  5. Step 5: Solve for x
    x = 1,136,869,562.14/39,018.35
  6. Step 6: Final answer
    x = 29,136.79

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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.