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Finding the Fourth Proportional to 15,284.86, 21,096.86 and 9,319.82

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Solution

The fourth proportional to 15,284.86, 21,096.86 and 9,319.82 is: 12,863.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,284.86 : 21,096.86 = 9,319.82 : x
  2. Step 2: Convert to fraction form
    15,284.86/21,096.86 = 9,319.82/x
  3. Step 3: Cross multiply
    15,284.86x = 21,096.86 × 9,319.82
  4. Step 4: Simplify right side
    15,284.86x = 196,618,785.68
  5. Step 5: Solve for x
    x = 196,618,785.68/15,284.86
  6. Step 6: Final answer
    x = 12,863.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.