Home / 18,581.08-25,653.90-11,515

Finding the Fourth Proportional to 18,581.08, 25,653.90 and 11,515

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Solution

The fourth proportional to 18,581.08, 25,653.90 and 11,515 is: 15,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.08 : 25,653.90 = 11,515 : x
  2. Step 2: Convert to fraction form
    18,581.08/25,653.90 = 11,515/x
  3. Step 3: Cross multiply
    18,581.08x = 25,653.90 × 11,515
  4. Step 4: Simplify right side
    18,581.08x = 295,404,658.50
  5. Step 5: Solve for x
    x = 295,404,658.50/18,581.08
  6. Step 6: Final answer
    x = 15,898.14

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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.