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Finding the Fourth Proportional to 12,887.95, 17,793.94 and 9,898.44

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Solution

The fourth proportional to 12,887.95, 17,793.94 and 9,898.44 is: 13,666.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.95 : 17,793.94 = 9,898.44 : x
  2. Step 2: Convert to fraction form
    12,887.95/17,793.94 = 9,898.44/x
  3. Step 3: Cross multiply
    12,887.95x = 17,793.94 × 9,898.44
  4. Step 4: Simplify right side
    12,887.95x = 176,132,247.45
  5. Step 5: Solve for x
    x = 176,132,247.45/12,887.95
  6. Step 6: Final answer
    x = 13,666.43

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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.