Home / 28,880.08-43,321.70-9,157.21

Finding the Fourth Proportional to 28,880.08, 43,321.70 and 9,157.21

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Solution

The fourth proportional to 28,880.08, 43,321.70 and 9,157.21 is: 13,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,880.08 : 43,321.70 = 9,157.21 : x
  2. Step 2: Convert to fraction form
    28,880.08/43,321.70 = 9,157.21/x
  3. Step 3: Cross multiply
    28,880.08x = 43,321.70 × 9,157.21
  4. Step 4: Simplify right side
    28,880.08x = 396,705,904.46
  5. Step 5: Solve for x
    x = 396,705,904.46/28,880.08
  6. Step 6: Final answer
    x = 13,736.32

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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.