Home / 20,517.10-28,299.49-12,563.23

Finding the Fourth Proportional to 20,517.10, 28,299.49 and 12,563.23

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Solution

The fourth proportional to 20,517.10, 28,299.49 and 12,563.23 is: 17,328.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,517.10 : 28,299.49 = 12,563.23 : x
  2. Step 2: Convert to fraction form
    20,517.10/28,299.49 = 12,563.23/x
  3. Step 3: Cross multiply
    20,517.10x = 28,299.49 × 12,563.23
  4. Step 4: Simplify right side
    20,517.10x = 355,533,001.75
  5. Step 5: Solve for x
    x = 355,533,001.75/20,517.10
  6. Step 6: Final answer
    x = 17,328.62

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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.