Home / 28,785.24-43,179.60-12,128.64

Finding the Fourth Proportional to 28,785.24, 43,179.60 and 12,128.64

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Solution

The fourth proportional to 28,785.24, 43,179.60 and 12,128.64 is: 18,193.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,785.24 : 43,179.60 = 12,128.64 : x
  2. Step 2: Convert to fraction form
    28,785.24/43,179.60 = 12,128.64/x
  3. Step 3: Cross multiply
    28,785.24x = 43,179.60 × 12,128.64
  4. Step 4: Simplify right side
    28,785.24x = 523,709,823.74
  5. Step 5: Solve for x
    x = 523,709,823.74/28,785.24
  6. Step 6: Final answer
    x = 18,193.69

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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.