Home / 15,766.80-23,621.40-12,829.20

Finding the Fourth Proportional to 15,766.80, 23,621.40 and 12,829.20

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Solution

The fourth proportional to 15,766.80, 23,621.40 and 12,829.20 is: 19,220.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,766.80 : 23,621.40 = 12,829.20 : x
  2. Step 2: Convert to fraction form
    15,766.80/23,621.40 = 12,829.20/x
  3. Step 3: Cross multiply
    15,766.80x = 23,621.40 × 12,829.20
  4. Step 4: Simplify right side
    15,766.80x = 303,043,664.88
  5. Step 5: Solve for x
    x = 303,043,664.88/15,766.80
  6. Step 6: Final answer
    x = 19,220.37

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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.