Home / 38,778.86-58,168.60-21,239.12

Finding the Fourth Proportional to 38,778.86, 58,168.60 and 21,239.12

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Solution

The fourth proportional to 38,778.86, 58,168.60 and 21,239.12 is: 31,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,778.86 : 58,168.60 = 21,239.12 : x
  2. Step 2: Convert to fraction form
    38,778.86/58,168.60 = 21,239.12/x
  3. Step 3: Cross multiply
    38,778.86x = 58,168.60 × 21,239.12
  4. Step 4: Simplify right side
    38,778.86x = 1,235,449,875.63
  5. Step 5: Solve for x
    x = 1,235,449,875.63/38,778.86
  6. Step 6: Final answer
    x = 31,858.85

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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.