Home / 20,394.73-28,128.49-16,851.79

Finding the Fourth Proportional to 20,394.73, 28,128.49 and 16,851.79

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Solution

The fourth proportional to 20,394.73, 28,128.49 and 16,851.79 is: 23,242.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,394.73 : 28,128.49 = 16,851.79 : x
  2. Step 2: Convert to fraction form
    20,394.73/28,128.49 = 16,851.79/x
  3. Step 3: Cross multiply
    20,394.73x = 28,128.49 × 16,851.79
  4. Step 4: Simplify right side
    20,394.73x = 474,015,406.50
  5. Step 5: Solve for x
    x = 474,015,406.50/20,394.73
  6. Step 6: Final answer
    x = 23,242.05

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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.