Home / 13,851.84-20,743.20-8,641.92

Finding the Fourth Proportional to 13,851.84, 20,743.20 and 8,641.92

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Solution

The fourth proportional to 13,851.84, 20,743.20 and 8,641.92 is: 12,941.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,851.84 : 20,743.20 = 8,641.92 : x
  2. Step 2: Convert to fraction form
    13,851.84/20,743.20 = 8,641.92/x
  3. Step 3: Cross multiply
    13,851.84x = 20,743.20 × 8,641.92
  4. Step 4: Simplify right side
    13,851.84x = 179,261,074.94
  5. Step 5: Solve for x
    x = 179,261,074.94/13,851.84
  6. Step 6: Final answer
    x = 12,941.32

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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.