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Finding the Fourth Proportional to 17,398.98, 26,076.60 and 12,478.22

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Solution

The fourth proportional to 17,398.98, 26,076.60 and 12,478.22 is: 18,701.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,398.98 : 26,076.60 = 12,478.22 : x
  2. Step 2: Convert to fraction form
    17,398.98/26,076.60 = 12,478.22/x
  3. Step 3: Cross multiply
    17,398.98x = 26,076.60 × 12,478.22
  4. Step 4: Simplify right side
    17,398.98x = 325,389,551.65
  5. Step 5: Solve for x
    x = 325,389,551.65/17,398.98
  6. Step 6: Final answer
    x = 18,701.65

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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.