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Finding the Fourth Proportional to 35,398.60, 53,107.10 and 13,212.14

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Solution

The fourth proportional to 35,398.60, 53,107.10 and 13,212.14 is: 19,821.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.60 : 53,107.10 = 13,212.14 : x
  2. Step 2: Convert to fraction form
    35,398.60/53,107.10 = 13,212.14/x
  3. Step 3: Cross multiply
    35,398.60x = 53,107.10 × 13,212.14
  4. Step 4: Simplify right side
    35,398.60x = 701,658,506.90
  5. Step 5: Solve for x
    x = 701,658,506.90/35,398.60
  6. Step 6: Final answer
    x = 19,821.65

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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.