Home / 20,410.31-30,616.11-5,620.32

Finding the Fourth Proportional to 20,410.31, 30,616.11 and 5,620.32

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Solution

The fourth proportional to 20,410.31, 30,616.11 and 5,620.32 is: 8,430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.31 : 30,616.11 = 5,620.32 : x
  2. Step 2: Convert to fraction form
    20,410.31/30,616.11 = 5,620.32/x
  3. Step 3: Cross multiply
    20,410.31x = 30,616.11 × 5,620.32
  4. Step 4: Simplify right side
    20,410.31x = 172,072,335.36
  5. Step 5: Solve for x
    x = 172,072,335.36/20,410.31
  6. Step 6: Final answer
    x = 8,430.66

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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.