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Finding the Fourth Proportional to 13,049.99, 18,008.93 and 7,081.55

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Solution

The fourth proportional to 13,049.99, 18,008.93 and 7,081.55 is: 9,772.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,049.99 : 18,008.93 = 7,081.55 : x
  2. Step 2: Convert to fraction form
    13,049.99/18,008.93 = 7,081.55/x
  3. Step 3: Cross multiply
    13,049.99x = 18,008.93 × 7,081.55
  4. Step 4: Simplify right side
    13,049.99x = 127,531,138.24
  5. Step 5: Solve for x
    x = 127,531,138.24/13,049.99
  6. Step 6: Final answer
    x = 9,772.51

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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.