Home / 28,150.16-42,232.44-8,428.64

Finding the Fourth Proportional to 28,150.16, 42,232.44 and 8,428.64

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Solution

The fourth proportional to 28,150.16, 42,232.44 and 8,428.64 is: 12,645.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,150.16 : 42,232.44 = 8,428.64 : x
  2. Step 2: Convert to fraction form
    28,150.16/42,232.44 = 8,428.64/x
  3. Step 3: Cross multiply
    28,150.16x = 42,232.44 × 8,428.64
  4. Step 4: Simplify right side
    28,150.16x = 355,962,033.08
  5. Step 5: Solve for x
    x = 355,962,033.08/28,150.16
  6. Step 6: Final answer
    x = 12,645.12

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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.