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Finding the Fourth Proportional to 13,903.26, 20,843.95 and 6,878.33

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Solution

The fourth proportional to 13,903.26, 20,843.95 and 6,878.33 is: 10,312.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,903.26 : 20,843.95 = 6,878.33 : x
  2. Step 2: Convert to fraction form
    13,903.26/20,843.95 = 6,878.33/x
  3. Step 3: Cross multiply
    13,903.26x = 20,843.95 × 6,878.33
  4. Step 4: Simplify right side
    13,903.26x = 143,371,566.60
  5. Step 5: Solve for x
    x = 143,371,566.60/13,903.26
  6. Step 6: Final answer
    x = 10,312.08

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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.