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Finding the Fourth Proportional to 20,081.76, 30,092.12 and 15,904.32

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Solution

The fourth proportional to 20,081.76, 30,092.12 and 15,904.32 is: 23,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.76 : 30,092.12 = 15,904.32 : x
  2. Step 2: Convert to fraction form
    20,081.76/30,092.12 = 15,904.32/x
  3. Step 3: Cross multiply
    20,081.76x = 30,092.12 × 15,904.32
  4. Step 4: Simplify right side
    20,081.76x = 478,594,705.96
  5. Step 5: Solve for x
    x = 478,594,705.96/20,081.76
  6. Step 6: Final answer
    x = 23,832.31

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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.