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Finding the Fourth Proportional to 15,611.78, 23,399.17 and 7,274.54

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Solution

The fourth proportional to 15,611.78, 23,399.17 and 7,274.54 is: 10,903.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,611.78 : 23,399.17 = 7,274.54 : x
  2. Step 2: Convert to fraction form
    15,611.78/23,399.17 = 7,274.54/x
  3. Step 3: Cross multiply
    15,611.78x = 23,399.17 × 7,274.54
  4. Step 4: Simplify right side
    15,611.78x = 170,218,139.63
  5. Step 5: Solve for x
    x = 170,218,139.63/15,611.78
  6. Step 6: Final answer
    x = 10,903.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.