Home / 20,307.39-30,440.34-11,523.75

Finding the Fourth Proportional to 20,307.39, 30,440.34 and 11,523.75

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Solution

The fourth proportional to 20,307.39, 30,440.34 and 11,523.75 is: 17,273.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,307.39 : 30,440.34 = 11,523.75 : x
  2. Step 2: Convert to fraction form
    20,307.39/30,440.34 = 11,523.75/x
  3. Step 3: Cross multiply
    20,307.39x = 30,440.34 × 11,523.75
  4. Step 4: Simplify right side
    20,307.39x = 350,786,868.08
  5. Step 5: Solve for x
    x = 350,786,868.08/20,307.39
  6. Step 6: Final answer
    x = 17,273.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.