Home / 39,774.25-54,887.06-21,869.13

Finding the Fourth Proportional to 39,774.25, 54,887.06 and 21,869.13

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Solution

The fourth proportional to 39,774.25, 54,887.06 and 21,869.13 is: 30,178.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,774.25 : 54,887.06 = 21,869.13 : x
  2. Step 2: Convert to fraction form
    39,774.25/54,887.06 = 21,869.13/x
  3. Step 3: Cross multiply
    39,774.25x = 54,887.06 × 21,869.13
  4. Step 4: Simplify right side
    39,774.25x = 1,200,332,250.46
  5. Step 5: Solve for x
    x = 1,200,332,250.46/39,774.25
  6. Step 6: Final answer
    x = 30,178.63

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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.