Home / 14,340.28-21,508.80-4,978.66

Finding the Fourth Proportional to 14,340.28, 21,508.80 and 4,978.66

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Solution

The fourth proportional to 14,340.28, 21,508.80 and 4,978.66 is: 7,467.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,340.28 : 21,508.80 = 4,978.66 : x
  2. Step 2: Convert to fraction form
    14,340.28/21,508.80 = 4,978.66/x
  3. Step 3: Cross multiply
    14,340.28x = 21,508.80 × 4,978.66
  4. Step 4: Simplify right side
    14,340.28x = 107,085,002.21
  5. Step 5: Solve for x
    x = 107,085,002.21/14,340.28
  6. Step 6: Final answer
    x = 7,467.43

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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.