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Finding the Fourth Proportional to 17,391.70, 26,051.10 and 14,111.20

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Solution

The fourth proportional to 17,391.70, 26,051.10 and 14,111.20 is: 21,137.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,391.70 : 26,051.10 = 14,111.20 : x
  2. Step 2: Convert to fraction form
    17,391.70/26,051.10 = 14,111.20/x
  3. Step 3: Cross multiply
    17,391.70x = 26,051.10 × 14,111.20
  4. Step 4: Simplify right side
    17,391.70x = 367,612,282.32
  5. Step 5: Solve for x
    x = 367,612,282.32/17,391.70
  6. Step 6: Final answer
    x = 21,137.23

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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.