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Finding the Third Proportional to 8,980.59 and 19,515.66

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Solution

The third proportional to 8,980.59 and 19,515.66 is: 42,409.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.59 : 19,515.66 = 19,515.66 : x
  2. Step 2: Convert to fraction form
    8,980.59/19,515.66 = 19,515.66/x
  3. Step 3: Cross multiply
    8,980.59x = 19,515.66 × 19,515.66
  4. Step 4: Simplify right side
    8,980.59x = 380,860,838.87
  5. Step 5: Solve for x
    x = 380,860,838.87/8,980.59
  6. Step 6: Final answer
    x = 42,409.32

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.