Home / 38,920.07-53,693.78-28,735.49

Finding the Fourth Proportional to 38,920.07, 53,693.78 and 28,735.49

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Solution

The fourth proportional to 38,920.07, 53,693.78 and 28,735.49 is: 39,643.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,920.07 : 53,693.78 = 28,735.49 : x
  2. Step 2: Convert to fraction form
    38,920.07/53,693.78 = 28,735.49/x
  3. Step 3: Cross multiply
    38,920.07x = 53,693.78 × 28,735.49
  4. Step 4: Simplify right side
    38,920.07x = 1,542,916,934.57
  5. Step 5: Solve for x
    x = 1,542,916,934.57/38,920.07
  6. Step 6: Final answer
    x = 39,643.22

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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.