Home / 28,544.31-42,815.66-12,763.89

Finding the Fourth Proportional to 28,544.31, 42,815.66 and 12,763.89

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Solution

The fourth proportional to 28,544.31, 42,815.66 and 12,763.89 is: 19,145.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,544.31 : 42,815.66 = 12,763.89 : x
  2. Step 2: Convert to fraction form
    28,544.31/42,815.66 = 12,763.89/x
  3. Step 3: Cross multiply
    28,544.31x = 42,815.66 × 12,763.89
  4. Step 4: Simplify right side
    28,544.31x = 546,494,310.70
  5. Step 5: Solve for x
    x = 546,494,310.70/28,544.31
  6. Step 6: Final answer
    x = 19,145.47

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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.