Home / 12,835.02-19,220.40-8,140.80

Finding the Fourth Proportional to 12,835.02, 19,220.40 and 8,140.80

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Solution

The fourth proportional to 12,835.02, 19,220.40 and 8,140.80 is: 12,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,835.02 : 19,220.40 = 8,140.80 : x
  2. Step 2: Convert to fraction form
    12,835.02/19,220.40 = 8,140.80/x
  3. Step 3: Cross multiply
    12,835.02x = 19,220.40 × 8,140.80
  4. Step 4: Simplify right side
    12,835.02x = 156,469,432.32
  5. Step 5: Solve for x
    x = 156,469,432.32/12,835.02
  6. Step 6: Final answer
    x = 12,190.82

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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.