Home / 13,815.36-19,074.15-9,515.70

Finding the Fourth Proportional to 13,815.36, 19,074.15 and 9,515.70

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Solution

The fourth proportional to 13,815.36, 19,074.15 and 9,515.70 is: 13,137.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.36 : 19,074.15 = 9,515.70 : x
  2. Step 2: Convert to fraction form
    13,815.36/19,074.15 = 9,515.70/x
  3. Step 3: Cross multiply
    13,815.36x = 19,074.15 × 9,515.70
  4. Step 4: Simplify right side
    13,815.36x = 181,503,889.16
  5. Step 5: Solve for x
    x = 181,503,889.16/13,815.36
  6. Step 6: Final answer
    x = 13,137.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.