Home / 13,771.21-20,645.14-5,457.10

Finding the Fourth Proportional to 13,771.21, 20,645.14 and 5,457.10

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Solution

The fourth proportional to 13,771.21, 20,645.14 and 5,457.10 is: 8,181.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.21 : 20,645.14 = 5,457.10 : x
  2. Step 2: Convert to fraction form
    13,771.21/20,645.14 = 5,457.10/x
  3. Step 3: Cross multiply
    13,771.21x = 20,645.14 × 5,457.10
  4. Step 4: Simplify right side
    13,771.21x = 112,662,593.49
  5. Step 5: Solve for x
    x = 112,662,593.49/13,771.21
  6. Step 6: Final answer
    x = 8,181.02

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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.