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Finding the Fourth Proportional to 15,999.63, 23,999.45 and 6,143.55

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Solution

The fourth proportional to 15,999.63, 23,999.45 and 6,143.55 is: 9,215.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,999.63 : 23,999.45 = 6,143.55 : x
  2. Step 2: Convert to fraction form
    15,999.63/23,999.45 = 6,143.55/x
  3. Step 3: Cross multiply
    15,999.63x = 23,999.45 × 6,143.55
  4. Step 4: Simplify right side
    15,999.63x = 147,441,790.33
  5. Step 5: Solve for x
    x = 147,441,790.33/15,999.63
  6. Step 6: Final answer
    x = 9,215.33

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Similar ratio
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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.