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Finding the Fourth Proportional to 22,454.66, 30,990.32 and 18,671.32

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Solution

The fourth proportional to 22,454.66, 30,990.32 and 18,671.32 is: 25,768.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,454.66 : 30,990.32 = 18,671.32 : x
  2. Step 2: Convert to fraction form
    22,454.66/30,990.32 = 18,671.32/x
  3. Step 3: Cross multiply
    22,454.66x = 30,990.32 × 18,671.32
  4. Step 4: Simplify right side
    22,454.66x = 578,630,181.62
  5. Step 5: Solve for x
    x = 578,630,181.62/22,454.66
  6. Step 6: Final answer
    x = 25,768.82

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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.