Home / 12,690.12-19,036.44-4,369.02

Finding the Fourth Proportional to 12,690.12, 19,036.44 and 4,369.02

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Solution

The fourth proportional to 12,690.12, 19,036.44 and 4,369.02 is: 6,553.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.12 : 19,036.44 = 4,369.02 : x
  2. Step 2: Convert to fraction form
    12,690.12/19,036.44 = 4,369.02/x
  3. Step 3: Cross multiply
    12,690.12x = 19,036.44 × 4,369.02
  4. Step 4: Simplify right side
    12,690.12x = 83,170,587.09
  5. Step 5: Solve for x
    x = 83,170,587.09/12,690.12
  6. Step 6: Final answer
    x = 6,553.96

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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.