Home / 11,137.48-15,374.82-9,619

Finding the Fourth Proportional to 11,137.48, 15,374.82 and 9,619

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Solution

The fourth proportional to 11,137.48, 15,374.82 and 9,619 is: 13,278.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.48 : 15,374.82 = 9,619 : x
  2. Step 2: Convert to fraction form
    11,137.48/15,374.82 = 9,619/x
  3. Step 3: Cross multiply
    11,137.48x = 15,374.82 × 9,619
  4. Step 4: Simplify right side
    11,137.48x = 147,890,393.58
  5. Step 5: Solve for x
    x = 147,890,393.58/11,137.48
  6. Step 6: Final answer
    x = 13,278.62

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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.