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Finding the Fourth Proportional to 13,593.69, 18,770.13 and 9,121.41

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Solution

The fourth proportional to 13,593.69, 18,770.13 and 9,121.41 is: 12,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,593.69 : 18,770.13 = 9,121.41 : x
  2. Step 2: Convert to fraction form
    13,593.69/18,770.13 = 9,121.41/x
  3. Step 3: Cross multiply
    13,593.69x = 18,770.13 × 9,121.41
  4. Step 4: Simplify right side
    13,593.69x = 171,210,051.48
  5. Step 5: Solve for x
    x = 171,210,051.48/13,593.69
  6. Step 6: Final answer
    x = 12,594.82

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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.