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Finding the Fourth Proportional to 38,390.42, 52,978.90 and 22,260.86

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Solution

The fourth proportional to 38,390.42, 52,978.90 and 22,260.86 is: 30,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,390.42 : 52,978.90 = 22,260.86 : x
  2. Step 2: Convert to fraction form
    38,390.42/52,978.90 = 22,260.86/x
  3. Step 3: Cross multiply
    38,390.42x = 52,978.90 × 22,260.86
  4. Step 4: Simplify right side
    38,390.42x = 1,179,355,875.85
  5. Step 5: Solve for x
    x = 1,179,355,875.85/38,390.42
  6. Step 6: Final answer
    x = 30,720.06

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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.