Home / 20,502.21-30,720.97-14,929.92

Finding the Fourth Proportional to 20,502.21, 30,720.97 and 14,929.92

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Solution

The fourth proportional to 20,502.21, 30,720.97 and 14,929.92 is: 22,371.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.21 : 30,720.97 = 14,929.92 : x
  2. Step 2: Convert to fraction form
    20,502.21/30,720.97 = 14,929.92/x
  3. Step 3: Cross multiply
    20,502.21x = 30,720.97 × 14,929.92
  4. Step 4: Simplify right side
    20,502.21x = 458,661,643.08
  5. Step 5: Solve for x
    x = 458,661,643.08/20,502.21
  6. Step 6: Final answer
    x = 22,371.32

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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.