Home / 20,117.82-30,179.46-6,971.21

Finding the Fourth Proportional to 20,117.82, 30,179.46 and 6,971.21

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Solution

The fourth proportional to 20,117.82, 30,179.46 and 6,971.21 is: 10,457.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,117.82 : 30,179.46 = 6,971.21 : x
  2. Step 2: Convert to fraction form
    20,117.82/30,179.46 = 6,971.21/x
  3. Step 3: Cross multiply
    20,117.82x = 30,179.46 × 6,971.21
  4. Step 4: Simplify right side
    20,117.82x = 210,387,491.92
  5. Step 5: Solve for x
    x = 210,387,491.92/20,117.82
  6. Step 6: Final answer
    x = 10,457.77

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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.