Home / 12,690.32-19,035.84-3,456.32

Finding the Fourth Proportional to 12,690.32, 19,035.84 and 3,456.32

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Solution

The fourth proportional to 12,690.32, 19,035.84 and 3,456.32 is: 5,184.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,690.32 : 19,035.84 = 3,456.32 : x
  2. Step 2: Convert to fraction form
    12,690.32/19,035.84 = 3,456.32/x
  3. Step 3: Cross multiply
    12,690.32x = 19,035.84 × 3,456.32
  4. Step 4: Simplify right side
    12,690.32x = 65,793,954.51
  5. Step 5: Solve for x
    x = 65,793,954.51/12,690.32
  6. Step 6: Final answer
    x = 5,184.58

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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.