Home / 13,678.26-18,877.42-8,376.60

Finding the Fourth Proportional to 13,678.26, 18,877.42 and 8,376.60

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Solution

The fourth proportional to 13,678.26, 18,877.42 and 8,376.60 is: 11,560.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.26 : 18,877.42 = 8,376.60 : x
  2. Step 2: Convert to fraction form
    13,678.26/18,877.42 = 8,376.60/x
  3. Step 3: Cross multiply
    13,678.26x = 18,877.42 × 8,376.60
  4. Step 4: Simplify right side
    13,678.26x = 158,128,596.37
  5. Step 5: Solve for x
    x = 158,128,596.37/13,678.26
  6. Step 6: Final answer
    x = 11,560.58

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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.