Home / 28,662.96-43,011.20-12,021.55

Finding the Fourth Proportional to 28,662.96, 43,011.20 and 12,021.55

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Solution

The fourth proportional to 28,662.96, 43,011.20 and 12,021.55 is: 18,039.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,662.96 : 43,011.20 = 12,021.55 : x
  2. Step 2: Convert to fraction form
    28,662.96/43,011.20 = 12,021.55/x
  3. Step 3: Cross multiply
    28,662.96x = 43,011.20 × 12,021.55
  4. Step 4: Simplify right side
    28,662.96x = 517,061,213.89
  5. Step 5: Solve for x
    x = 517,061,213.89/28,662.96
  6. Step 6: Final answer
    x = 18,039.35

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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.