Home / 28,893.70-43,340.55-8,117.20

Finding the Fourth Proportional to 28,893.70, 43,340.55 and 8,117.20

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Solution

The fourth proportional to 28,893.70, 43,340.55 and 8,117.20 is: 12,175.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,893.70 : 43,340.55 = 8,117.20 : x
  2. Step 2: Convert to fraction form
    28,893.70/43,340.55 = 8,117.20/x
  3. Step 3: Cross multiply
    28,893.70x = 43,340.55 × 8,117.20
  4. Step 4: Simplify right side
    28,893.70x = 351,803,912.46
  5. Step 5: Solve for x
    x = 351,803,912.46/28,893.70
  6. Step 6: Final answer
    x = 12,175.80

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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.