Home / 38,789.58-53,531.28-21,793.86

Finding the Fourth Proportional to 38,789.58, 53,531.28 and 21,793.86

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Solution

The fourth proportional to 38,789.58, 53,531.28 and 21,793.86 is: 30,076.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,789.58 : 53,531.28 = 21,793.86 : x
  2. Step 2: Convert to fraction form
    38,789.58/53,531.28 = 21,793.86/x
  3. Step 3: Cross multiply
    38,789.58x = 53,531.28 × 21,793.86
  4. Step 4: Simplify right side
    38,789.58x = 1,166,652,979.14
  5. Step 5: Solve for x
    x = 1,166,652,979.14/38,789.58
  6. Step 6: Final answer
    x = 30,076.45

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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.