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Finding the Fourth Proportional to 18,610.47, 27,918.43 and 5,461.11

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Solution

The fourth proportional to 18,610.47, 27,918.43 and 5,461.11 is: 8,192.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,610.47 : 27,918.43 = 5,461.11 : x
  2. Step 2: Convert to fraction form
    18,610.47/27,918.43 = 5,461.11/x
  3. Step 3: Cross multiply
    18,610.47x = 27,918.43 × 5,461.11
  4. Step 4: Simplify right side
    18,610.47x = 152,465,617.26
  5. Step 5: Solve for x
    x = 152,465,617.26/18,610.47
  6. Step 6: Final answer
    x = 8,192.46

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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.