Home / 28,418.46-42,627.72-12,619.79

Finding the Fourth Proportional to 28,418.46, 42,627.72 and 12,619.79

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Solution

The fourth proportional to 28,418.46, 42,627.72 and 12,619.79 is: 18,929.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.46 : 42,627.72 = 12,619.79 : x
  2. Step 2: Convert to fraction form
    28,418.46/42,627.72 = 12,619.79/x
  3. Step 3: Cross multiply
    28,418.46x = 42,627.72 × 12,619.79
  4. Step 4: Simplify right side
    28,418.46x = 537,952,661.44
  5. Step 5: Solve for x
    x = 537,952,661.44/28,418.46
  6. Step 6: Final answer
    x = 18,929.69

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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.