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Finding the Fourth Proportional to 11,482.56, 15,845.42 and 6,447.60

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Solution

The fourth proportional to 11,482.56, 15,845.42 and 6,447.60 is: 8,897.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,482.56 : 15,845.42 = 6,447.60 : x
  2. Step 2: Convert to fraction form
    11,482.56/15,845.42 = 6,447.60/x
  3. Step 3: Cross multiply
    11,482.56x = 15,845.42 × 6,447.60
  4. Step 4: Simplify right side
    11,482.56x = 102,164,946.11
  5. Step 5: Solve for x
    x = 102,164,946.11/11,482.56
  6. Step 6: Final answer
    x = 8,897.40

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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.