Home / 28,329,856.80-42,494,785.20-18,126,189.60

Finding the Fourth Proportional to 28,329,856.80, 42,494,785.20 and 18,126,189.60

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Solution

The fourth proportional to 28,329,856.80, 42,494,785.20 and 18,126,189.60 is: 27,189,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,329,856.80 : 42,494,785.20 = 18,126,189.60 : x
  2. Step 2: Convert to fraction form
    28,329,856.80/42,494,785.20 = 18,126,189.60/x
  3. Step 3: Cross multiply
    28,329,856.80x = 42,494,785.20 × 18,126,189.60
  4. Step 4: Simplify right side
    28,329,856.80x = 770,268,533,546,474
  5. Step 5: Solve for x
    x = 770,268,533,546,474/28,329,856.80
  6. Step 6: Final answer
    x = 27,189,284.40

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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.