Home / 12,515.48-18,771.40-4,722.47

Finding the Fourth Proportional to 12,515.48, 18,771.40 and 4,722.47

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Solution

The fourth proportional to 12,515.48, 18,771.40 and 4,722.47 is: 7,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,515.48 : 18,771.40 = 4,722.47 : x
  2. Step 2: Convert to fraction form
    12,515.48/18,771.40 = 4,722.47/x
  3. Step 3: Cross multiply
    12,515.48x = 18,771.40 × 4,722.47
  4. Step 4: Simplify right side
    12,515.48x = 88,647,329.23
  5. Step 5: Solve for x
    x = 88,647,329.23/12,515.48
  6. Step 6: Final answer
    x = 7,083.02

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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.