Home / 13,880.61-20,820.93-3,492.36

Finding the Fourth Proportional to 13,880.61, 20,820.93 and 3,492.36

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Solution

The fourth proportional to 13,880.61, 20,820.93 and 3,492.36 is: 5,238.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.61 : 20,820.93 = 3,492.36 : x
  2. Step 2: Convert to fraction form
    13,880.61/20,820.93 = 3,492.36/x
  3. Step 3: Cross multiply
    13,880.61x = 20,820.93 × 3,492.36
  4. Step 4: Simplify right side
    13,880.61x = 72,714,183.09
  5. Step 5: Solve for x
    x = 72,714,183.09/13,880.61
  6. Step 6: Final answer
    x = 5,238.54

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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.