Home / 28,861.55-43,231.56-14,778.78

Finding the Fourth Proportional to 28,861.55, 43,231.56 and 14,778.78

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Solution

The fourth proportional to 28,861.55, 43,231.56 and 14,778.78 is: 22,137.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,861.55 : 43,231.56 = 14,778.78 : x
  2. Step 2: Convert to fraction form
    28,861.55/43,231.56 = 14,778.78/x
  3. Step 3: Cross multiply
    28,861.55x = 43,231.56 × 14,778.78
  4. Step 4: Simplify right side
    28,861.55x = 638,909,714.30
  5. Step 5: Solve for x
    x = 638,909,714.30/28,861.55
  6. Step 6: Final answer
    x = 22,137.05

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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.