Home / 13,734.90-20,602.35-5,418.84

Finding the Fourth Proportional to 13,734.90, 20,602.35 and 5,418.84

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Solution

The fourth proportional to 13,734.90, 20,602.35 and 5,418.84 is: 8,128.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.90 : 20,602.35 = 5,418.84 : x
  2. Step 2: Convert to fraction form
    13,734.90/20,602.35 = 5,418.84/x
  3. Step 3: Cross multiply
    13,734.90x = 20,602.35 × 5,418.84
  4. Step 4: Simplify right side
    13,734.90x = 111,640,838.27
  5. Step 5: Solve for x
    x = 111,640,838.27/13,734.90
  6. Step 6: Final answer
    x = 8,128.26

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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.