Home / 13,516.82-18,651.85-9,271.51

Finding the Fourth Proportional to 13,516.82, 18,651.85 and 9,271.51

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Solution

The fourth proportional to 13,516.82, 18,651.85 and 9,271.51 is: 12,793.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,516.82 : 18,651.85 = 9,271.51 : x
  2. Step 2: Convert to fraction form
    13,516.82/18,651.85 = 9,271.51/x
  3. Step 3: Cross multiply
    13,516.82x = 18,651.85 × 9,271.51
  4. Step 4: Simplify right side
    13,516.82x = 172,930,743.99
  5. Step 5: Solve for x
    x = 172,930,743.99/13,516.82
  6. Step 6: Final answer
    x = 12,793.75

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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.