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Finding the Fourth Proportional to 28,398.82, 42,598.24 and 7,622.32

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Solution

The fourth proportional to 28,398.82, 42,598.24 and 7,622.32 is: 11,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,398.82 : 42,598.24 = 7,622.32 : x
  2. Step 2: Convert to fraction form
    28,398.82/42,598.24 = 7,622.32/x
  3. Step 3: Cross multiply
    28,398.82x = 42,598.24 × 7,622.32
  4. Step 4: Simplify right side
    28,398.82x = 324,697,416.72
  5. Step 5: Solve for x
    x = 324,697,416.72/28,398.82
  6. Step 6: Final answer
    x = 11,433.48

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Similar ratio
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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.