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Finding the Fourth Proportional to 12,611.59, 18,828.55 and 9,634.33

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Solution

The fourth proportional to 12,611.59, 18,828.55 and 9,634.33 is: 14,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.59 : 18,828.55 = 9,634.33 : x
  2. Step 2: Convert to fraction form
    12,611.59/18,828.55 = 9,634.33/x
  3. Step 3: Cross multiply
    12,611.59x = 18,828.55 × 9,634.33
  4. Step 4: Simplify right side
    12,611.59x = 181,400,415.95
  5. Step 5: Solve for x
    x = 181,400,415.95/12,611.59
  6. Step 6: Final answer
    x = 14,383.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.