Home / 28,197.36-42,284.70-18,321.84

Finding the Fourth Proportional to 28,197.36, 42,284.70 and 18,321.84

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Solution

The fourth proportional to 28,197.36, 42,284.70 and 18,321.84 is: 27,475.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,197.36 : 42,284.70 = 18,321.84 : x
  2. Step 2: Convert to fraction form
    28,197.36/42,284.70 = 18,321.84/x
  3. Step 3: Cross multiply
    28,197.36x = 42,284.70 × 18,321.84
  4. Step 4: Simplify right side
    28,197.36x = 774,733,507.85
  5. Step 5: Solve for x
    x = 774,733,507.85/28,197.36
  6. Step 6: Final answer
    x = 27,475.39

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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.