Home / 12,431.90-18,643.40-4,110.38

Finding the Fourth Proportional to 12,431.90, 18,643.40 and 4,110.38

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Solution

The fourth proportional to 12,431.90, 18,643.40 and 4,110.38 is: 6,164.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.90 : 18,643.40 = 4,110.38 : x
  2. Step 2: Convert to fraction form
    12,431.90/18,643.40 = 4,110.38/x
  3. Step 3: Cross multiply
    12,431.90x = 18,643.40 × 4,110.38
  4. Step 4: Simplify right side
    12,431.90x = 76,631,458.49
  5. Step 5: Solve for x
    x = 76,631,458.49/12,431.90
  6. Step 6: Final answer
    x = 6,164.10

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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.