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Finding the Fourth Proportional to 19,500.75, 26,900.10 and 11,950.74

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Solution

The fourth proportional to 19,500.75, 26,900.10 and 11,950.74 is: 16,485.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,500.75 : 26,900.10 = 11,950.74 : x
  2. Step 2: Convert to fraction form
    19,500.75/26,900.10 = 11,950.74/x
  3. Step 3: Cross multiply
    19,500.75x = 26,900.10 × 11,950.74
  4. Step 4: Simplify right side
    19,500.75x = 321,476,101.07
  5. Step 5: Solve for x
    x = 321,476,101.07/19,500.75
  6. Step 6: Final answer
    x = 16,485.32

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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.