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Finding the Fourth Proportional to 35,119.61, 52,654.81 and 12,930.11

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Solution

The fourth proportional to 35,119.61, 52,654.81 and 12,930.11 is: 19,386.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,119.61 : 52,654.81 = 12,930.11 : x
  2. Step 2: Convert to fraction form
    35,119.61/52,654.81 = 12,930.11/x
  3. Step 3: Cross multiply
    35,119.61x = 52,654.81 × 12,930.11
  4. Step 4: Simplify right side
    35,119.61x = 680,832,485.33
  5. Step 5: Solve for x
    x = 680,832,485.33/35,119.61
  6. Step 6: Final answer
    x = 19,386.11

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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.