Home / 28,878.60-43,334.10-12,235.80

Finding the Fourth Proportional to 28,878.60, 43,334.10 and 12,235.80

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Solution

The fourth proportional to 28,878.60, 43,334.10 and 12,235.80 is: 18,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.60 : 43,334.10 = 12,235.80 : x
  2. Step 2: Convert to fraction form
    28,878.60/43,334.10 = 12,235.80/x
  3. Step 3: Cross multiply
    28,878.60x = 43,334.10 × 12,235.80
  4. Step 4: Simplify right side
    28,878.60x = 530,227,380.78
  5. Step 5: Solve for x
    x = 530,227,380.78/28,878.60
  6. Step 6: Final answer
    x = 18,360.56

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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.