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Finding the Fourth Proportional to 20,410.59, 30,616.04 and 5,620.32

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Solution

The fourth proportional to 20,410.59, 30,616.04 and 5,620.32 is: 8,430.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.59 : 30,616.04 = 5,620.32 : x
  2. Step 2: Convert to fraction form
    20,410.59/30,616.04 = 5,620.32/x
  3. Step 3: Cross multiply
    20,410.59x = 30,616.04 × 5,620.32
  4. Step 4: Simplify right side
    20,410.59x = 172,071,941.93
  5. Step 5: Solve for x
    x = 172,071,941.93/20,410.59
  6. Step 6: Final answer
    x = 8,430.52

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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.