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Finding the Fourth Proportional to 15,768.71, 23,663.46 and 8,378.54

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Solution

The fourth proportional to 15,768.71, 23,663.46 and 8,378.54 is: 12,573.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,768.71 : 23,663.46 = 8,378.54 : x
  2. Step 2: Convert to fraction form
    15,768.71/23,663.46 = 8,378.54/x
  3. Step 3: Cross multiply
    15,768.71x = 23,663.46 × 8,378.54
  4. Step 4: Simplify right side
    15,768.71x = 198,265,246.15
  5. Step 5: Solve for x
    x = 198,265,246.15/15,768.71
  6. Step 6: Final answer
    x = 12,573.33

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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.