Home / 38,685.24-53,385.54-21,918.24

Finding the Fourth Proportional to 38,685.24, 53,385.54 and 21,918.24

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Solution

The fourth proportional to 38,685.24, 53,385.54 and 21,918.24 is: 30,247.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,685.24 : 53,385.54 = 21,918.24 : x
  2. Step 2: Convert to fraction form
    38,685.24/53,385.54 = 21,918.24/x
  3. Step 3: Cross multiply
    38,685.24x = 53,385.54 × 21,918.24
  4. Step 4: Simplify right side
    38,685.24x = 1,170,117,078.25
  5. Step 5: Solve for x
    x = 1,170,117,078.25/38,685.24
  6. Step 6: Final answer
    x = 30,247.12

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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.