Home / 20,464.49-28,245.03-13,303.28

Finding the Fourth Proportional to 20,464.49, 28,245.03 and 13,303.28

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Solution

The fourth proportional to 20,464.49, 28,245.03 and 13,303.28 is: 18,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,464.49 : 28,245.03 = 13,303.28 : x
  2. Step 2: Convert to fraction form
    20,464.49/28,245.03 = 13,303.28/x
  3. Step 3: Cross multiply
    20,464.49x = 28,245.03 × 13,303.28
  4. Step 4: Simplify right side
    20,464.49x = 375,751,542.70
  5. Step 5: Solve for x
    x = 375,751,542.70/20,464.49
  6. Step 6: Final answer
    x = 18,361.15

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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.