Home / 14,491.20-21,728.70-6,690.36

Finding the Fourth Proportional to 14,491.20, 21,728.70 and 6,690.36

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Solution

The fourth proportional to 14,491.20, 21,728.70 and 6,690.36 is: 10,031.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,491.20 : 21,728.70 = 6,690.36 : x
  2. Step 2: Convert to fraction form
    14,491.20/21,728.70 = 6,690.36/x
  3. Step 3: Cross multiply
    14,491.20x = 21,728.70 × 6,690.36
  4. Step 4: Simplify right side
    14,491.20x = 145,372,825.33
  5. Step 5: Solve for x
    x = 145,372,825.33/14,491.20
  6. Step 6: Final answer
    x = 10,031.80

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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.