Home / 13,767.21-20,639.12-5,453.08

Finding the Fourth Proportional to 13,767.21, 20,639.12 and 5,453.08

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Solution

The fourth proportional to 13,767.21, 20,639.12 and 5,453.08 is: 8,174.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.21 : 20,639.12 = 5,453.08 : x
  2. Step 2: Convert to fraction form
    13,767.21/20,639.12 = 5,453.08/x
  3. Step 3: Cross multiply
    13,767.21x = 20,639.12 × 5,453.08
  4. Step 4: Simplify right side
    13,767.21x = 112,546,693.63
  5. Step 5: Solve for x
    x = 112,546,693.63/13,767.21
  6. Step 6: Final answer
    x = 8,174.98

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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.