Home / 38,580.96-53,242.20-21,813.60

Finding the Fourth Proportional to 38,580.96, 53,242.20 and 21,813.60

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Solution

The fourth proportional to 38,580.96, 53,242.20 and 21,813.60 is: 30,103.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,580.96 : 53,242.20 = 21,813.60 : x
  2. Step 2: Convert to fraction form
    38,580.96/53,242.20 = 21,813.60/x
  3. Step 3: Cross multiply
    38,580.96x = 53,242.20 × 21,813.60
  4. Step 4: Simplify right side
    38,580.96x = 1,161,404,053.92
  5. Step 5: Solve for x
    x = 1,161,404,053.92/38,580.96
  6. Step 6: Final answer
    x = 30,103.04

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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.