Home / 12,272.08-18,415.40-6,431.98

Finding the Fourth Proportional to 12,272.08, 18,415.40 and 6,431.98

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Solution

The fourth proportional to 12,272.08, 18,415.40 and 6,431.98 is: 9,651.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,272.08 : 18,415.40 = 6,431.98 : x
  2. Step 2: Convert to fraction form
    12,272.08/18,415.40 = 6,431.98/x
  3. Step 3: Cross multiply
    12,272.08x = 18,415.40 × 6,431.98
  4. Step 4: Simplify right side
    12,272.08x = 118,447,484.49
  5. Step 5: Solve for x
    x = 118,447,484.49/12,272.08
  6. Step 6: Final answer
    x = 9,651.79

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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.