Home / 28,394.20-39,184.42-15,819

Finding the Fourth Proportional to 28,394.20, 39,184.42 and 15,819

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Solution

The fourth proportional to 28,394.20, 39,184.42 and 15,819 is: 21,830.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,394.20 : 39,184.42 = 15,819 : x
  2. Step 2: Convert to fraction form
    28,394.20/39,184.42 = 15,819/x
  3. Step 3: Cross multiply
    28,394.20x = 39,184.42 × 15,819
  4. Step 4: Simplify right side
    28,394.20x = 619,858,339.98
  5. Step 5: Solve for x
    x = 619,858,339.98/28,394.20
  6. Step 6: Final answer
    x = 21,830.46

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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.