Home / 12,839.60-19,237.80-8,454.80

Finding the Fourth Proportional to 12,839.60, 19,237.80 and 8,454.80

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Solution

The fourth proportional to 12,839.60, 19,237.80 and 8,454.80 is: 12,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.60 : 19,237.80 = 8,454.80 : x
  2. Step 2: Convert to fraction form
    12,839.60/19,237.80 = 8,454.80/x
  3. Step 3: Cross multiply
    12,839.60x = 19,237.80 × 8,454.80
  4. Step 4: Simplify right side
    12,839.60x = 162,651,751.44
  5. Step 5: Solve for x
    x = 162,651,751.44/12,839.60
  6. Step 6: Final answer
    x = 12,667.98

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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.