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Finding the Fourth Proportional to 11,352.78, 16,985.43 and 7,637.31

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Solution

The fourth proportional to 11,352.78, 16,985.43 and 7,637.31 is: 11,426.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,352.78 : 16,985.43 = 7,637.31 : x
  2. Step 2: Convert to fraction form
    11,352.78/16,985.43 = 7,637.31/x
  3. Step 3: Cross multiply
    11,352.78x = 16,985.43 × 7,637.31
  4. Step 4: Simplify right side
    11,352.78x = 129,722,994.39
  5. Step 5: Solve for x
    x = 129,722,994.39/11,352.78
  6. Step 6: Final answer
    x = 11,426.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.