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Finding the Fourth Proportional to 18,650.88, 25,735.50 and 11,574.72

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Solution

The fourth proportional to 18,650.88, 25,735.50 and 11,574.72 is: 15,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.88 : 25,735.50 = 11,574.72 : x
  2. Step 2: Convert to fraction form
    18,650.88/25,735.50 = 11,574.72/x
  3. Step 3: Cross multiply
    18,650.88x = 25,735.50 × 11,574.72
  4. Step 4: Simplify right side
    18,650.88x = 297,881,206.56
  5. Step 5: Solve for x
    x = 297,881,206.56/18,650.88
  6. Step 6: Final answer
    x = 15,971.43

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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.