Home / 20,997.28-28,973.95-12,044.55

Finding the Fourth Proportional to 20,997.28, 28,973.95 and 12,044.55

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Solution

The fourth proportional to 20,997.28, 28,973.95 and 12,044.55 is: 16,620.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,997.28 : 28,973.95 = 12,044.55 : x
  2. Step 2: Convert to fraction form
    20,997.28/28,973.95 = 12,044.55/x
  3. Step 3: Cross multiply
    20,997.28x = 28,973.95 × 12,044.55
  4. Step 4: Simplify right side
    20,997.28x = 348,978,172.79
  5. Step 5: Solve for x
    x = 348,978,172.79/20,997.28
  6. Step 6: Final answer
    x = 16,620.16

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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.