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Finding the Fourth Proportional to 11,938.47, 17,908.05 and 5,699.13

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Solution

The fourth proportional to 11,938.47, 17,908.05 and 5,699.13 is: 8,548.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,938.47 : 17,908.05 = 5,699.13 : x
  2. Step 2: Convert to fraction form
    11,938.47/17,908.05 = 5,699.13/x
  3. Step 3: Cross multiply
    11,938.47x = 17,908.05 × 5,699.13
  4. Step 4: Simplify right side
    11,938.47x = 102,060,305.00
  5. Step 5: Solve for x
    x = 102,060,305.00/11,938.47
  6. Step 6: Final answer
    x = 8,548.86

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1.5x scale

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.