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Finding the Fourth Proportional to 18,858.56, 28,301.54 and 15,204.92

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Solution

The fourth proportional to 18,858.56, 28,301.54 and 15,204.92 is: 22,818.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,858.56 : 28,301.54 = 15,204.92 : x
  2. Step 2: Convert to fraction form
    18,858.56/28,301.54 = 15,204.92/x
  3. Step 3: Cross multiply
    18,858.56x = 28,301.54 × 15,204.92
  4. Step 4: Simplify right side
    18,858.56x = 430,322,434.04
  5. Step 5: Solve for x
    x = 430,322,434.04/18,858.56
  6. Step 6: Final answer
    x = 22,818.42

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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.