Home / 20,475.10-28,255.54-11,522.75

Finding the Fourth Proportional to 20,475.10, 28,255.54 and 11,522.75

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Solution

The fourth proportional to 20,475.10, 28,255.54 and 11,522.75 is: 15,901.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475.10 : 28,255.54 = 11,522.75 : x
  2. Step 2: Convert to fraction form
    20,475.10/28,255.54 = 11,522.75/x
  3. Step 3: Cross multiply
    20,475.10x = 28,255.54 × 11,522.75
  4. Step 4: Simplify right side
    20,475.10x = 325,581,523.54
  5. Step 5: Solve for x
    x = 325,581,523.54/20,475.10
  6. Step 6: Final answer
    x = 15,901.34

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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.