Home / 13,677.24-20,514.90-7,815.48

Finding the Fourth Proportional to 13,677.24, 20,514.90 and 7,815.48

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Solution

The fourth proportional to 13,677.24, 20,514.90 and 7,815.48 is: 11,722.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.24 : 20,514.90 = 7,815.48 : x
  2. Step 2: Convert to fraction form
    13,677.24/20,514.90 = 7,815.48/x
  3. Step 3: Cross multiply
    13,677.24x = 20,514.90 × 7,815.48
  4. Step 4: Simplify right side
    13,677.24x = 160,333,790.65
  5. Step 5: Solve for x
    x = 160,333,790.65/13,677.24
  6. Step 6: Final answer
    x = 11,722.67

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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.