Home / 28,450.76-42,680.18-15,120.28

Finding the Fourth Proportional to 28,450.76, 42,680.18 and 15,120.28

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Solution

The fourth proportional to 28,450.76, 42,680.18 and 15,120.28 is: 22,682.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,450.76 : 42,680.18 = 15,120.28 : x
  2. Step 2: Convert to fraction form
    28,450.76/42,680.18 = 15,120.28/x
  3. Step 3: Cross multiply
    28,450.76x = 42,680.18 × 15,120.28
  4. Step 4: Simplify right side
    28,450.76x = 645,336,272.05
  5. Step 5: Solve for x
    x = 645,336,272.05/28,450.76
  6. Step 6: Final answer
    x = 22,682.57

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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.