Home / 18,849.68-28,271.28-6,840.64

Finding the Fourth Proportional to 18,849.68, 28,271.28 and 6,840.64

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Solution

The fourth proportional to 18,849.68, 28,271.28 and 6,840.64 is: 10,259.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,849.68 : 28,271.28 = 6,840.64 : x
  2. Step 2: Convert to fraction form
    18,849.68/28,271.28 = 6,840.64/x
  3. Step 3: Cross multiply
    18,849.68x = 28,271.28 × 6,840.64
  4. Step 4: Simplify right side
    18,849.68x = 193,393,648.82
  5. Step 5: Solve for x
    x = 193,393,648.82/18,849.68
  6. Step 6: Final answer
    x = 10,259.78

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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.