Home / 38,783.10-53,520.58-21,787.82

Finding the Fourth Proportional to 38,783.10, 53,520.58 and 21,787.82

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Solution

The fourth proportional to 38,783.10, 53,520.58 and 21,787.82 is: 30,067.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,783.10 : 53,520.58 = 21,787.82 : x
  2. Step 2: Convert to fraction form
    38,783.10/53,520.58 = 21,787.82/x
  3. Step 3: Cross multiply
    38,783.10x = 53,520.58 × 21,787.82
  4. Step 4: Simplify right side
    38,783.10x = 1,166,096,723.67
  5. Step 5: Solve for x
    x = 1,166,096,723.67/38,783.10
  6. Step 6: Final answer
    x = 30,067.13

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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.