Home / 20,563.20-28,328.58-16,954.65

Finding the Fourth Proportional to 20,563.20, 28,328.58 and 16,954.65

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Solution

The fourth proportional to 20,563.20, 28,328.58 and 16,954.65 is: 23,357.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.20 : 28,328.58 = 16,954.65 : x
  2. Step 2: Convert to fraction form
    20,563.20/28,328.58 = 16,954.65/x
  3. Step 3: Cross multiply
    20,563.20x = 28,328.58 × 16,954.65
  4. Step 4: Simplify right side
    20,563.20x = 480,301,158.90
  5. Step 5: Solve for x
    x = 480,301,158.90/20,563.20
  6. Step 6: Final answer
    x = 23,357.32

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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.