Home / 18,872.20-28,312.37-5,725.63

Finding the Fourth Proportional to 18,872.20, 28,312.37 and 5,725.63

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Solution

The fourth proportional to 18,872.20, 28,312.37 and 5,725.63 is: 8,589.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.20 : 28,312.37 = 5,725.63 : x
  2. Step 2: Convert to fraction form
    18,872.20/28,312.37 = 5,725.63/x
  3. Step 3: Cross multiply
    18,872.20x = 28,312.37 × 5,725.63
  4. Step 4: Simplify right side
    18,872.20x = 162,105,984.85
  5. Step 5: Solve for x
    x = 162,105,984.85/18,872.20
  6. Step 6: Final answer
    x = 8,589.67

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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.