Home / 20,328.80-30,485.61-6,998.06

Finding the Fourth Proportional to 20,328.80, 30,485.61 and 6,998.06

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Solution

The fourth proportional to 20,328.80, 30,485.61 and 6,998.06 is: 10,494.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.80 : 30,485.61 = 6,998.06 : x
  2. Step 2: Convert to fraction form
    20,328.80/30,485.61 = 6,998.06/x
  3. Step 3: Cross multiply
    20,328.80x = 30,485.61 × 6,998.06
  4. Step 4: Simplify right side
    20,328.80x = 213,340,204.13
  5. Step 5: Solve for x
    x = 213,340,204.13/20,328.80
  6. Step 6: Final answer
    x = 10,494.48

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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.