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Finding the Fourth Proportional to 15,999.86, 23,999.79 and 4,313.08

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Solution

The fourth proportional to 15,999.86, 23,999.79 and 4,313.08 is: 6,469.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.86 : 23,999.79 = 4,313.08 : x
  2. Step 2: Convert to fraction form
    15,999.86/23,999.79 = 4,313.08/x
  3. Step 3: Cross multiply
    15,999.86x = 23,999.79 × 4,313.08
  4. Step 4: Simplify right side
    15,999.86x = 103,512,954.25
  5. Step 5: Solve for x
    x = 103,512,954.25/15,999.86
  6. Step 6: Final answer
    x = 6,469.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.