Home / 20,131.04-30,189-6,980.24

Finding the Fourth Proportional to 20,131.04, 30,189 and 6,980.24

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Solution

The fourth proportional to 20,131.04, 30,189 and 6,980.24 is: 10,467.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.04 : 30,189 = 6,980.24 : x
  2. Step 2: Convert to fraction form
    20,131.04/30,189 = 6,980.24/x
  3. Step 3: Cross multiply
    20,131.04x = 30,189 × 6,980.24
  4. Step 4: Simplify right side
    20,131.04x = 210,726,465.36
  5. Step 5: Solve for x
    x = 210,726,465.36/20,131.04
  6. Step 6: Final answer
    x = 10,467.74

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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.