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Finding the Fourth Proportional to 19,391.30, 26,770.16 and 13,051.22

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Solution

The fourth proportional to 19,391.30, 26,770.16 and 13,051.22 is: 18,017.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,391.30 : 26,770.16 = 13,051.22 : x
  2. Step 2: Convert to fraction form
    19,391.30/26,770.16 = 13,051.22/x
  3. Step 3: Cross multiply
    19,391.30x = 26,770.16 × 13,051.22
  4. Step 4: Simplify right side
    19,391.30x = 349,383,247.60
  5. Step 5: Solve for x
    x = 349,383,247.60/19,391.30
  6. Step 6: Final answer
    x = 18,017.53

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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.