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Finding the Fourth Proportional to 20,732, 28,619.04 and 14,026.88

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Solution

The fourth proportional to 20,732, 28,619.04 and 14,026.88 is: 19,363.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,732 : 28,619.04 = 14,026.88 : x
  2. Step 2: Convert to fraction form
    20,732/28,619.04 = 14,026.88/x
  3. Step 3: Cross multiply
    20,732x = 28,619.04 × 14,026.88
  4. Step 4: Simplify right side
    20,732x = 401,435,839.80
  5. Step 5: Solve for x
    x = 401,435,839.80/20,732
  6. Step 6: Final answer
    x = 19,363.10

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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.