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Finding the Fourth Proportional to 15,059.47, 20,783.54 and 8,771.44

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Solution

The fourth proportional to 15,059.47, 20,783.54 and 8,771.44 is: 12,105.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,059.47 : 20,783.54 = 8,771.44 : x
  2. Step 2: Convert to fraction form
    15,059.47/20,783.54 = 8,771.44/x
  3. Step 3: Cross multiply
    15,059.47x = 20,783.54 × 8,771.44
  4. Step 4: Simplify right side
    15,059.47x = 182,301,478.28
  5. Step 5: Solve for x
    x = 182,301,478.28/15,059.47
  6. Step 6: Final answer
    x = 12,105.44

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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.