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Finding the Fourth Proportional to 13,602.92, 18,772.92 and 7,634.99

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Solution

The fourth proportional to 13,602.92, 18,772.92 and 7,634.99 is: 10,536.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,602.92 : 18,772.92 = 7,634.99 : x
  2. Step 2: Convert to fraction form
    13,602.92/18,772.92 = 7,634.99/x
  3. Step 3: Cross multiply
    13,602.92x = 18,772.92 × 7,634.99
  4. Step 4: Simplify right side
    13,602.92x = 143,331,075.56
  5. Step 5: Solve for x
    x = 143,331,075.56/13,602.92
  6. Step 6: Final answer
    x = 10,536.79

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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.