Home / 13,515.57-18,650.68-7,849.92

Finding the Fourth Proportional to 13,515.57, 18,650.68 and 7,849.92

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Solution

The fourth proportional to 13,515.57, 18,650.68 and 7,849.92 is: 10,832.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.57 : 18,650.68 = 7,849.92 : x
  2. Step 2: Convert to fraction form
    13,515.57/18,650.68 = 7,849.92/x
  3. Step 3: Cross multiply
    13,515.57x = 18,650.68 × 7,849.92
  4. Step 4: Simplify right side
    13,515.57x = 146,406,345.95
  5. Step 5: Solve for x
    x = 146,406,345.95/13,515.57
  6. Step 6: Final answer
    x = 10,832.42

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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.