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Finding the Fourth Proportional to 12,893.76, 17,803.44 and 9,904.86

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Solution

The fourth proportional to 12,893.76, 17,803.44 and 9,904.86 is: 13,676.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.76 : 17,803.44 = 9,904.86 : x
  2. Step 2: Convert to fraction form
    12,893.76/17,803.44 = 9,904.86/x
  3. Step 3: Cross multiply
    12,893.76x = 17,803.44 × 9,904.86
  4. Step 4: Simplify right side
    12,893.76x = 176,340,580.72
  5. Step 5: Solve for x
    x = 176,340,580.72/12,893.76
  6. Step 6: Final answer
    x = 13,676.43

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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.