Home / 13,780.82-19,026.46-8,683.69

Finding the Fourth Proportional to 13,780.82, 19,026.46 and 8,683.69

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Solution

The fourth proportional to 13,780.82, 19,026.46 and 8,683.69 is: 11,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,780.82 : 19,026.46 = 8,683.69 : x
  2. Step 2: Convert to fraction form
    13,780.82/19,026.46 = 8,683.69/x
  3. Step 3: Cross multiply
    13,780.82x = 19,026.46 × 8,683.69
  4. Step 4: Simplify right side
    13,780.82x = 165,219,880.44
  5. Step 5: Solve for x
    x = 165,219,880.44/13,780.82
  6. Step 6: Final answer
    x = 11,989.12

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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.