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Finding the Fourth Proportional to 12,893.45, 17,783.08 and 11,104.05

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Solution

The fourth proportional to 12,893.45, 17,783.08 and 11,104.05 is: 15,315.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,893.45 : 17,783.08 = 11,104.05 : x
  2. Step 2: Convert to fraction form
    12,893.45/17,783.08 = 11,104.05/x
  3. Step 3: Cross multiply
    12,893.45x = 17,783.08 × 11,104.05
  4. Step 4: Simplify right side
    12,893.45x = 197,464,248.40
  5. Step 5: Solve for x
    x = 197,464,248.40/12,893.45
  6. Step 6: Final answer
    x = 15,315.09

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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.