Home / 20,409.02-30,609.85-5,616.02

Finding the Fourth Proportional to 20,409.02, 30,609.85 and 5,616.02

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Solution

The fourth proportional to 20,409.02, 30,609.85 and 5,616.02 is: 8,423.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,409.02 : 30,609.85 = 5,616.02 : x
  2. Step 2: Convert to fraction form
    20,409.02/30,609.85 = 5,616.02/x
  3. Step 3: Cross multiply
    20,409.02x = 30,609.85 × 5,616.02
  4. Step 4: Simplify right side
    20,409.02x = 171,905,529.80
  5. Step 5: Solve for x
    x = 171,905,529.80/20,409.02
  6. Step 6: Final answer
    x = 8,423.02

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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.