Home / 20,148.84-30,223.26-7,665.99

Finding the Fourth Proportional to 20,148.84, 30,223.26 and 7,665.99

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Solution

The fourth proportional to 20,148.84, 30,223.26 and 7,665.99 is: 11,498.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.84 : 30,223.26 = 7,665.99 : x
  2. Step 2: Convert to fraction form
    20,148.84/30,223.26 = 7,665.99/x
  3. Step 3: Cross multiply
    20,148.84x = 30,223.26 × 7,665.99
  4. Step 4: Simplify right side
    20,148.84x = 231,691,208.93
  5. Step 5: Solve for x
    x = 231,691,208.93/20,148.84
  6. Step 6: Final answer
    x = 11,498.99

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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.