Home / 20,219.30-30,329.85-6,892.10

Finding the Fourth Proportional to 20,219.30, 30,329.85 and 6,892.10

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Solution

The fourth proportional to 20,219.30, 30,329.85 and 6,892.10 is: 10,338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.30 : 30,329.85 = 6,892.10 : x
  2. Step 2: Convert to fraction form
    20,219.30/30,329.85 = 6,892.10/x
  3. Step 3: Cross multiply
    20,219.30x = 30,329.85 × 6,892.10
  4. Step 4: Simplify right side
    20,219.30x = 209,036,359.19
  5. Step 5: Solve for x
    x = 209,036,359.19/20,219.30
  6. Step 6: Final answer
    x = 10,338.46

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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.