Home / 20,715.04-28,583.58-11,638.62

Finding the Fourth Proportional to 20,715.04, 28,583.58 and 11,638.62

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Solution

The fourth proportional to 20,715.04, 28,583.58 and 11,638.62 is: 16,059.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,715.04 : 28,583.58 = 11,638.62 : x
  2. Step 2: Convert to fraction form
    20,715.04/28,583.58 = 11,638.62/x
  3. Step 3: Cross multiply
    20,715.04x = 28,583.58 × 11,638.62
  4. Step 4: Simplify right side
    20,715.04x = 332,673,469.50
  5. Step 5: Solve for x
    x = 332,673,469.50/20,715.04
  6. Step 6: Final answer
    x = 16,059.51

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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.