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Finding the Fourth Proportional to 17,172.63, 25,755.90 and 7,810.45

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Solution

The fourth proportional to 17,172.63, 25,755.90 and 7,810.45 is: 11,714.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,172.63 : 25,755.90 = 7,810.45 : x
  2. Step 2: Convert to fraction form
    17,172.63/25,755.90 = 7,810.45/x
  3. Step 3: Cross multiply
    17,172.63x = 25,755.90 × 7,810.45
  4. Step 4: Simplify right side
    17,172.63x = 201,165,169.16
  5. Step 5: Solve for x
    x = 201,165,169.16/17,172.63
  6. Step 6: Final answer
    x = 11,714.29

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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.