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Finding the Third Proportional to 7,890.75 and 13,510.13

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Solution

The third proportional to 7,890.75 and 13,510.13 is: 23,131.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.75 : 13,510.13 = 13,510.13 : x
  2. Step 2: Convert to fraction form
    7,890.75/13,510.13 = 13,510.13/x
  3. Step 3: Cross multiply
    7,890.75x = 13,510.13 × 13,510.13
  4. Step 4: Simplify right side
    7,890.75x = 182,523,477.52
  5. Step 5: Solve for x
    x = 182,523,477.52/7,890.75
  6. Step 6: Final answer
    x = 23,131.32

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Why These Related Problems?

These problems maintain the same ratio (1.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.