Home / 13,623.30-20,441.43-7,781.58

Finding the Fourth Proportional to 13,623.30, 20,441.43 and 7,781.58

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Solution

The fourth proportional to 13,623.30, 20,441.43 and 7,781.58 is: 11,676.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.30 : 20,441.43 = 7,781.58 : x
  2. Step 2: Convert to fraction form
    13,623.30/20,441.43 = 7,781.58/x
  3. Step 3: Cross multiply
    13,623.30x = 20,441.43 × 7,781.58
  4. Step 4: Simplify right side
    13,623.30x = 159,066,622.86
  5. Step 5: Solve for x
    x = 159,066,622.86/13,623.30
  6. Step 6: Final answer
    x = 11,676.07

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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.