Home / 14,799-20,421.72-8,083.28

Finding the Fourth Proportional to 14,799, 20,421.72 and 8,083.28

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Solution

The fourth proportional to 14,799, 20,421.72 and 8,083.28 is: 11,154.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,799 : 20,421.72 = 8,083.28 : x
  2. Step 2: Convert to fraction form
    14,799/20,421.72 = 8,083.28/x
  3. Step 3: Cross multiply
    14,799x = 20,421.72 × 8,083.28
  4. Step 4: Simplify right side
    14,799x = 165,074,480.84
  5. Step 5: Solve for x
    x = 165,074,480.84/14,799
  6. Step 6: Final answer
    x = 11,154.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.