Home / 12,934.80-19,420.20-8,283.60

Finding the Fourth Proportional to 12,934.80, 19,420.20 and 8,283.60

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Solution

The fourth proportional to 12,934.80, 19,420.20 and 8,283.60 is: 12,436.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,934.80 : 19,420.20 = 8,283.60 : x
  2. Step 2: Convert to fraction form
    12,934.80/19,420.20 = 8,283.60/x
  3. Step 3: Cross multiply
    12,934.80x = 19,420.20 × 8,283.60
  4. Step 4: Simplify right side
    12,934.80x = 160,869,168.72
  5. Step 5: Solve for x
    x = 160,869,168.72/12,934.80
  6. Step 6: Final answer
    x = 12,436.93

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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.