Home / 20,281.50-30,422.12-5,491.94

Finding the Fourth Proportional to 20,281.50, 30,422.12 and 5,491.94

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Solution

The fourth proportional to 20,281.50, 30,422.12 and 5,491.94 is: 8,237.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.50 : 30,422.12 = 5,491.94 : x
  2. Step 2: Convert to fraction form
    20,281.50/30,422.12 = 5,491.94/x
  3. Step 3: Cross multiply
    20,281.50x = 30,422.12 × 5,491.94
  4. Step 4: Simplify right side
    20,281.50x = 167,076,278.14
  5. Step 5: Solve for x
    x = 167,076,278.14/20,281.50
  6. Step 6: Final answer
    x = 8,237.87

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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.