Home / 13,429.64-20,150.29-5,112.02

Finding the Fourth Proportional to 13,429.64, 20,150.29 and 5,112.02

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Solution

The fourth proportional to 13,429.64, 20,150.29 and 5,112.02 is: 7,670.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,429.64 : 20,150.29 = 5,112.02 : x
  2. Step 2: Convert to fraction form
    13,429.64/20,150.29 = 5,112.02/x
  3. Step 3: Cross multiply
    13,429.64x = 20,150.29 × 5,112.02
  4. Step 4: Simplify right side
    13,429.64x = 103,008,742.25
  5. Step 5: Solve for x
    x = 103,008,742.25/13,429.64
  6. Step 6: Final answer
    x = 7,670.25

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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.