Home / 13,679.02-18,880.19-11,437.03

Finding the Fourth Proportional to 13,679.02, 18,880.19 and 11,437.03

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Solution

The fourth proportional to 13,679.02, 18,880.19 and 11,437.03 is: 15,785.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.02 : 18,880.19 = 11,437.03 : x
  2. Step 2: Convert to fraction form
    13,679.02/18,880.19 = 11,437.03/x
  3. Step 3: Cross multiply
    13,679.02x = 18,880.19 × 11,437.03
  4. Step 4: Simplify right side
    13,679.02x = 215,933,299.44
  5. Step 5: Solve for x
    x = 215,933,299.44/13,679.02
  6. Step 6: Final answer
    x = 15,785.73

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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.