Home / 18,688.45-28,049.08-10,377.85

Finding the Fourth Proportional to 18,688.45, 28,049.08 and 10,377.85

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Solution

The fourth proportional to 18,688.45, 28,049.08 and 10,377.85 is: 15,575.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.45 : 28,049.08 = 10,377.85 : x
  2. Step 2: Convert to fraction form
    18,688.45/28,049.08 = 10,377.85/x
  3. Step 3: Cross multiply
    18,688.45x = 28,049.08 × 10,377.85
  4. Step 4: Simplify right side
    18,688.45x = 291,089,144.88
  5. Step 5: Solve for x
    x = 291,089,144.88/18,688.45
  6. Step 6: Final answer
    x = 15,575.88

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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.