Home / 11,515.32-17,271.15-4,118.40

Finding the Fourth Proportional to 11,515.32, 17,271.15 and 4,118.40

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Solution

The fourth proportional to 11,515.32, 17,271.15 and 4,118.40 is: 6,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,515.32 : 17,271.15 = 4,118.40 : x
  2. Step 2: Convert to fraction form
    11,515.32/17,271.15 = 4,118.40/x
  3. Step 3: Cross multiply
    11,515.32x = 17,271.15 × 4,118.40
  4. Step 4: Simplify right side
    11,515.32x = 71,129,504.16
  5. Step 5: Solve for x
    x = 71,129,504.16/11,515.32
  6. Step 6: Final answer
    x = 6,176.95

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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.