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Finding the Fourth Proportional to 11,372.64, 15,693.04 and 6,403.68

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Solution

The fourth proportional to 11,372.64, 15,693.04 and 6,403.68 is: 8,836.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,372.64 : 15,693.04 = 6,403.68 : x
  2. Step 2: Convert to fraction form
    11,372.64/15,693.04 = 6,403.68/x
  3. Step 3: Cross multiply
    11,372.64x = 15,693.04 × 6,403.68
  4. Step 4: Simplify right side
    11,372.64x = 100,493,206.39
  5. Step 5: Solve for x
    x = 100,493,206.39/11,372.64
  6. Step 6: Final answer
    x = 8,836.40

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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.