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Finding the Fourth Proportional to 14,478, 21,717 and 4,090.02

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Solution

The fourth proportional to 14,478, 21,717 and 4,090.02 is: 6,135.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478 : 21,717 = 4,090.02 : x
  2. Step 2: Convert to fraction form
    14,478/21,717 = 4,090.02/x
  3. Step 3: Cross multiply
    14,478x = 21,717 × 4,090.02
  4. Step 4: Simplify right side
    14,478x = 88,822,964.34
  5. Step 5: Solve for x
    x = 88,822,964.34/14,478
  6. Step 6: Final answer
    x = 6,135.03

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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.