Home / 28,845.64-43,176.12-20,920.60

Finding the Fourth Proportional to 28,845.64, 43,176.12 and 20,920.60

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Solution

The fourth proportional to 28,845.64, 43,176.12 and 20,920.60 is: 31,313.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,845.64 : 43,176.12 = 20,920.60 : x
  2. Step 2: Convert to fraction form
    28,845.64/43,176.12 = 20,920.60/x
  3. Step 3: Cross multiply
    28,845.64x = 43,176.12 × 20,920.60
  4. Step 4: Simplify right side
    28,845.64x = 903,270,336.07
  5. Step 5: Solve for x
    x = 903,270,336.07/28,845.64
  6. Step 6: Final answer
    x = 31,313.93

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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.