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Finding the Fourth Proportional to 14,419.30, 19,899.39 and 8,452.89

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Solution

The fourth proportional to 14,419.30, 19,899.39 and 8,452.89 is: 11,665.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,419.30 : 19,899.39 = 8,452.89 : x
  2. Step 2: Convert to fraction form
    14,419.30/19,899.39 = 8,452.89/x
  3. Step 3: Cross multiply
    14,419.30x = 19,899.39 × 8,452.89
  4. Step 4: Simplify right side
    14,419.30x = 168,207,354.74
  5. Step 5: Solve for x
    x = 168,207,354.74/14,419.30
  6. Step 6: Final answer
    x = 11,665.44

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1.5x scale

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.