Home / 20,406.59-30,610.04-5,616.32

Finding the Fourth Proportional to 20,406.59, 30,610.04 and 5,616.32

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Solution

The fourth proportional to 20,406.59, 30,610.04 and 5,616.32 is: 8,424.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,406.59 : 30,610.04 = 5,616.32 : x
  2. Step 2: Convert to fraction form
    20,406.59/30,610.04 = 5,616.32/x
  3. Step 3: Cross multiply
    20,406.59x = 30,610.04 × 5,616.32
  4. Step 4: Simplify right side
    20,406.59x = 171,915,770.90
  5. Step 5: Solve for x
    x = 171,915,770.90/20,406.59
  6. Step 6: Final answer
    x = 8,424.52

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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.