Home / 28,267.80-42,354.54-12,449.28

Finding the Fourth Proportional to 28,267.80, 42,354.54 and 12,449.28

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Solution

The fourth proportional to 28,267.80, 42,354.54 and 12,449.28 is: 18,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,267.80 : 42,354.54 = 12,449.28 : x
  2. Step 2: Convert to fraction form
    28,267.80/42,354.54 = 12,449.28/x
  3. Step 3: Cross multiply
    28,267.80x = 42,354.54 × 12,449.28
  4. Step 4: Simplify right side
    28,267.80x = 527,283,527.73
  5. Step 5: Solve for x
    x = 527,283,527.73/28,267.80
  6. Step 6: Final answer
    x = 18,653.15

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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.