Home / 19,400.97-26,766.33-12,690.45

Finding the Fourth Proportional to 19,400.97, 26,766.33 and 12,690.45

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Solution

The fourth proportional to 19,400.97, 26,766.33 and 12,690.45 is: 17,508.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,400.97 : 26,766.33 = 12,690.45 : x
  2. Step 2: Convert to fraction form
    19,400.97/26,766.33 = 12,690.45/x
  3. Step 3: Cross multiply
    19,400.97x = 26,766.33 × 12,690.45
  4. Step 4: Simplify right side
    19,400.97x = 339,676,772.55
  5. Step 5: Solve for x
    x = 339,676,772.55/19,400.97
  6. Step 6: Final answer
    x = 17,508.24

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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.