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Finding the Third Proportional to 9,915 and 23,890.50

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Solution

The third proportional to 9,915 and 23,890.50 is: 57,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915 : 23,890.50 = 23,890.50 : x
  2. Step 2: Convert to fraction form
    9,915/23,890.50 = 23,890.50/x
  3. Step 3: Cross multiply
    9,915x = 23,890.50 × 23,890.50
  4. Step 4: Simplify right side
    9,915x = 570,755,990.25
  5. Step 5: Solve for x
    x = 570,755,990.25/9,915
  6. Step 6: Final answer
    x = 57,564.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.