Home / 28,213.21-42,319.36-6,866.15

Finding the Fourth Proportional to 28,213.21, 42,319.36 and 6,866.15

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Solution

The fourth proportional to 28,213.21, 42,319.36 and 6,866.15 is: 10,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.21 : 42,319.36 = 6,866.15 : x
  2. Step 2: Convert to fraction form
    28,213.21/42,319.36 = 6,866.15/x
  3. Step 3: Cross multiply
    28,213.21x = 42,319.36 × 6,866.15
  4. Step 4: Simplify right side
    28,213.21x = 290,571,287.23
  5. Step 5: Solve for x
    x = 290,571,287.23/28,213.21
  6. Step 6: Final answer
    x = 10,299.12

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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.