Home / 28,798.20-39,757.20-19,893.60

Finding the Fourth Proportional to 28,798.20, 39,757.20 and 19,893.60

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Solution

The fourth proportional to 28,798.20, 39,757.20 and 19,893.60 is: 27,464.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,798.20 : 39,757.20 = 19,893.60 : x
  2. Step 2: Convert to fraction form
    28,798.20/39,757.20 = 19,893.60/x
  3. Step 3: Cross multiply
    28,798.20x = 39,757.20 × 19,893.60
  4. Step 4: Simplify right side
    28,798.20x = 790,913,833.92
  5. Step 5: Solve for x
    x = 790,913,833.92/28,798.20
  6. Step 6: Final answer
    x = 27,464.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.