Home / 15,014.13-20,720.99-12,896.64

Finding the Fourth Proportional to 15,014.13, 20,720.99 and 12,896.64

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Solution

The fourth proportional to 15,014.13, 20,720.99 and 12,896.64 is: 17,798.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,014.13 : 20,720.99 = 12,896.64 : x
  2. Step 2: Convert to fraction form
    15,014.13/20,720.99 = 12,896.64/x
  3. Step 3: Cross multiply
    15,014.13x = 20,720.99 × 12,896.64
  4. Step 4: Simplify right side
    15,014.13x = 267,231,202.72
  5. Step 5: Solve for x
    x = 267,231,202.72/15,014.13
  6. Step 6: Final answer
    x = 17,798.64

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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.