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Finding the Fourth Proportional to 17,915.29, 26,843.01 and 12,641.58

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Solution

The fourth proportional to 17,915.29, 26,843.01 and 12,641.58 is: 18,941.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,915.29 : 26,843.01 = 12,641.58 : x
  2. Step 2: Convert to fraction form
    17,915.29/26,843.01 = 12,641.58/x
  3. Step 3: Cross multiply
    17,915.29x = 26,843.01 × 12,641.58
  4. Step 4: Simplify right side
    17,915.29x = 339,338,058.36
  5. Step 5: Solve for x
    x = 339,338,058.36/17,915.29
  6. Step 6: Final answer
    x = 18,941.25

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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.