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Finding the Third Proportional to 7,121 and 15,604

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Solution

The third proportional to 7,121 and 15,604 is: 34,192.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,121 : 15,604 = 15,604 : x
  2. Step 2: Convert to fraction form
    7,121/15,604 = 15,604/x
  3. Step 3: Cross multiply
    7,121x = 15,604 × 15,604
  4. Step 4: Simplify right side
    7,121x = 243,484,816
  5. Step 5: Solve for x
    x = 243,484,816/7,121
  6. Step 6: Final answer
    x = 34,192.50

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.