Home / 12,686.12-19,040.73-6,768.03

Finding the Fourth Proportional to 12,686.12, 19,040.73 and 6,768.03

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Solution

The fourth proportional to 12,686.12, 19,040.73 and 6,768.03 is: 10,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,686.12 : 19,040.73 = 6,768.03 : x
  2. Step 2: Convert to fraction form
    12,686.12/19,040.73 = 6,768.03/x
  3. Step 3: Cross multiply
    12,686.12x = 19,040.73 × 6,768.03
  4. Step 4: Simplify right side
    12,686.12x = 128,868,135.08
  5. Step 5: Solve for x
    x = 128,868,135.08/12,686.12
  6. Step 6: Final answer
    x = 10,158.20

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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.