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Finding the Fourth Proportional to 12,697.57, 17,522.64 and 7,108.57

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Solution

The fourth proportional to 12,697.57, 17,522.64 and 7,108.57 is: 9,809.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,697.57 : 17,522.64 = 7,108.57 : x
  2. Step 2: Convert to fraction form
    12,697.57/17,522.64 = 7,108.57/x
  3. Step 3: Cross multiply
    12,697.57x = 17,522.64 × 7,108.57
  4. Step 4: Simplify right side
    12,697.57x = 124,560,913.02
  5. Step 5: Solve for x
    x = 124,560,913.02/12,697.57
  6. Step 6: Final answer
    x = 9,809.82

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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.