Home / 39,085.66-53,938.38-21,180.70

Finding the Fourth Proportional to 39,085.66, 53,938.38 and 21,180.70

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Solution

The fourth proportional to 39,085.66, 53,938.38 and 21,180.70 is: 29,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,085.66 : 53,938.38 = 21,180.70 : x
  2. Step 2: Convert to fraction form
    39,085.66/53,938.38 = 21,180.70/x
  3. Step 3: Cross multiply
    39,085.66x = 53,938.38 × 21,180.70
  4. Step 4: Simplify right side
    39,085.66x = 1,142,452,645.27
  5. Step 5: Solve for x
    x = 1,142,452,645.27/39,085.66
  6. Step 6: Final answer
    x = 29,229.46

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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.