Home / 12,987.41-19,479.15-3,626.51

Finding the Fourth Proportional to 12,987.41, 19,479.15 and 3,626.51

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Solution

The fourth proportional to 12,987.41, 19,479.15 and 3,626.51 is: 5,439.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,987.41 : 19,479.15 = 3,626.51 : x
  2. Step 2: Convert to fraction form
    12,987.41/19,479.15 = 3,626.51/x
  3. Step 3: Cross multiply
    12,987.41x = 19,479.15 × 3,626.51
  4. Step 4: Simplify right side
    12,987.41x = 70,641,234.87
  5. Step 5: Solve for x
    x = 70,641,234.87/12,987.41
  6. Step 6: Final answer
    x = 5,439.21

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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.