Home / 28,916.80-39,905.25-16,170.44

Finding the Fourth Proportional to 28,916.80, 39,905.25 and 16,170.44

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Solution

The fourth proportional to 28,916.80, 39,905.25 and 16,170.44 is: 22,315.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,916.80 : 39,905.25 = 16,170.44 : x
  2. Step 2: Convert to fraction form
    28,916.80/39,905.25 = 16,170.44/x
  3. Step 3: Cross multiply
    28,916.80x = 39,905.25 × 16,170.44
  4. Step 4: Simplify right side
    28,916.80x = 645,285,450.81
  5. Step 5: Solve for x
    x = 645,285,450.81/28,916.80
  6. Step 6: Final answer
    x = 22,315.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.