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Finding the Fourth Proportional to 18,930.50, 26,124.96 and 10,975.22

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Solution

The fourth proportional to 18,930.50, 26,124.96 and 10,975.22 is: 15,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,930.50 : 26,124.96 = 10,975.22 : x
  2. Step 2: Convert to fraction form
    18,930.50/26,124.96 = 10,975.22/x
  3. Step 3: Cross multiply
    18,930.50x = 26,124.96 × 10,975.22
  4. Step 4: Simplify right side
    18,930.50x = 286,727,052.87
  5. Step 5: Solve for x
    x = 286,727,052.87/18,930.50
  6. Step 6: Final answer
    x = 15,146.31

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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.