Home / 14,515.20-21,764.28-4,649.40

Finding the Fourth Proportional to 14,515.20, 21,764.28 and 4,649.40

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Solution

The fourth proportional to 14,515.20, 21,764.28 and 4,649.40 is: 6,971.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,515.20 : 21,764.28 = 4,649.40 : x
  2. Step 2: Convert to fraction form
    14,515.20/21,764.28 = 4,649.40/x
  3. Step 3: Cross multiply
    14,515.20x = 21,764.28 × 4,649.40
  4. Step 4: Simplify right side
    14,515.20x = 101,190,843.43
  5. Step 5: Solve for x
    x = 101,190,843.43/14,515.20
  6. Step 6: Final answer
    x = 6,971.37

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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.