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Finding the Fourth Proportional to 19,375.96, 26,728.94 and 12,665.50

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Solution

The fourth proportional to 19,375.96, 26,728.94 and 12,665.50 is: 17,471.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,375.96 : 26,728.94 = 12,665.50 : x
  2. Step 2: Convert to fraction form
    19,375.96/26,728.94 = 12,665.50/x
  3. Step 3: Cross multiply
    19,375.96x = 26,728.94 × 12,665.50
  4. Step 4: Simplify right side
    19,375.96x = 338,535,389.57
  5. Step 5: Solve for x
    x = 338,535,389.57/19,375.96
  6. Step 6: Final answer
    x = 17,471.93

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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.