Home / 12,271.08-18,411.48-4,485.36

Finding the Fourth Proportional to 12,271.08, 18,411.48 and 4,485.36

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Solution

The fourth proportional to 12,271.08, 18,411.48 and 4,485.36 is: 6,729.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,271.08 : 18,411.48 = 4,485.36 : x
  2. Step 2: Convert to fraction form
    12,271.08/18,411.48 = 4,485.36/x
  3. Step 3: Cross multiply
    12,271.08x = 18,411.48 × 4,485.36
  4. Step 4: Simplify right side
    12,271.08x = 82,582,115.93
  5. Step 5: Solve for x
    x = 82,582,115.93/12,271.08
  6. Step 6: Final answer
    x = 6,729.82

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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.