Home / 39,193.07-54,085.52-21,287.69

Finding the Fourth Proportional to 39,193.07, 54,085.52 and 21,287.69

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Solution

The fourth proportional to 39,193.07, 54,085.52 and 21,287.69 is: 29,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,193.07 : 54,085.52 = 21,287.69 : x
  2. Step 2: Convert to fraction form
    39,193.07/54,085.52 = 21,287.69/x
  3. Step 3: Cross multiply
    39,193.07x = 54,085.52 × 21,287.69
  4. Step 4: Simplify right side
    39,193.07x = 1,151,355,406.38
  5. Step 5: Solve for x
    x = 1,151,355,406.38/39,193.07
  6. Step 6: Final answer
    x = 29,376.51

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Double scale
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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.