Home / 18,790.47-28,147.43-8,899.76

Finding the Fourth Proportional to 18,790.47, 28,147.43 and 8,899.76

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Solution

The fourth proportional to 18,790.47, 28,147.43 and 8,899.76 is: 13,331.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.47 : 28,147.43 = 8,899.76 : x
  2. Step 2: Convert to fraction form
    18,790.47/28,147.43 = 8,899.76/x
  3. Step 3: Cross multiply
    18,790.47x = 28,147.43 × 8,899.76
  4. Step 4: Simplify right side
    18,790.47x = 250,505,464.23
  5. Step 5: Solve for x
    x = 250,505,464.23/18,790.47
  6. Step 6: Final answer
    x = 13,331.52

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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.