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Finding the Third Proportional to 15,583.50 and 19,935

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Solution

The third proportional to 15,583.50 and 19,935 is: 25,501.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,583.50 : 19,935 = 19,935 : x
  2. Step 2: Convert to fraction form
    15,583.50/19,935 = 19,935/x
  3. Step 3: Cross multiply
    15,583.50x = 19,935 × 19,935
  4. Step 4: Simplify right side
    15,583.50x = 397,404,225
  5. Step 5: Solve for x
    x = 397,404,225/15,583.50
  6. Step 6: Final answer
    x = 25,501.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.