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Finding the Fourth Proportional to 18,709.54, 28,049.41 and 10,803.08

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Solution

The fourth proportional to 18,709.54, 28,049.41 and 10,803.08 is: 16,196.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,709.54 : 28,049.41 = 10,803.08 : x
  2. Step 2: Convert to fraction form
    18,709.54/28,049.41 = 10,803.08/x
  3. Step 3: Cross multiply
    18,709.54x = 28,049.41 × 10,803.08
  4. Step 4: Simplify right side
    18,709.54x = 303,020,173.64
  5. Step 5: Solve for x
    x = 303,020,173.64/18,709.54
  6. Step 6: Final answer
    x = 16,196.02

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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.