Home / 38,420.32-57,553.80-18,638.86

Finding the Fourth Proportional to 38,420.32, 57,553.80 and 18,638.86

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Solution

The fourth proportional to 38,420.32, 57,553.80 and 18,638.86 is: 27,921.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,420.32 : 57,553.80 = 18,638.86 : x
  2. Step 2: Convert to fraction form
    38,420.32/57,553.80 = 18,638.86/x
  3. Step 3: Cross multiply
    38,420.32x = 57,553.80 × 18,638.86
  4. Step 4: Simplify right side
    38,420.32x = 1,072,737,220.67
  5. Step 5: Solve for x
    x = 1,072,737,220.67/38,420.32
  6. Step 6: Final answer
    x = 27,921.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.