Home / 13,746.90-20,621.72-3,886.26

Finding the Fourth Proportional to 13,746.90, 20,621.72 and 3,886.26

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Solution

The fourth proportional to 13,746.90, 20,621.72 and 3,886.26 is: 5,829.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,746.90 : 20,621.72 = 3,886.26 : x
  2. Step 2: Convert to fraction form
    13,746.90/20,621.72 = 3,886.26/x
  3. Step 3: Cross multiply
    13,746.90x = 20,621.72 × 3,886.26
  4. Step 4: Simplify right side
    13,746.90x = 80,141,365.57
  5. Step 5: Solve for x
    x = 80,141,365.57/13,746.90
  6. Step 6: Final answer
    x = 5,829.78

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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.