Home / 11,289.42-15,579.96-6,813.09

Finding the Fourth Proportional to 11,289.42, 15,579.96 and 6,813.09

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Solution

The fourth proportional to 11,289.42, 15,579.96 and 6,813.09 is: 9,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,289.42 : 15,579.96 = 6,813.09 : x
  2. Step 2: Convert to fraction form
    11,289.42/15,579.96 = 6,813.09/x
  3. Step 3: Cross multiply
    11,289.42x = 15,579.96 × 6,813.09
  4. Step 4: Simplify right side
    11,289.42x = 106,147,669.68
  5. Step 5: Solve for x
    x = 106,147,669.68/11,289.42
  6. Step 6: Final answer
    x = 9,402.40

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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.