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Finding the Fourth Proportional to 13,059.97, 18,022.03 and 7,681.57

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Solution

The fourth proportional to 13,059.97, 18,022.03 and 7,681.57 is: 10,600.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,059.97 : 18,022.03 = 7,681.57 : x
  2. Step 2: Convert to fraction form
    13,059.97/18,022.03 = 7,681.57/x
  3. Step 3: Cross multiply
    13,059.97x = 18,022.03 × 7,681.57
  4. Step 4: Simplify right side
    13,059.97x = 138,437,420.73
  5. Step 5: Solve for x
    x = 138,437,420.73/13,059.97
  6. Step 6: Final answer
    x = 10,600.14

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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.