Home / 20,400.33-30,603.59-7,249.58

Finding the Fourth Proportional to 20,400.33, 30,603.59 and 7,249.58

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Solution

The fourth proportional to 20,400.33, 30,603.59 and 7,249.58 is: 10,875.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.33 : 30,603.59 = 7,249.58 : x
  2. Step 2: Convert to fraction form
    20,400.33/30,603.59 = 7,249.58/x
  3. Step 3: Cross multiply
    20,400.33x = 30,603.59 × 7,249.58
  4. Step 4: Simplify right side
    20,400.33x = 221,863,173.99
  5. Step 5: Solve for x
    x = 221,863,173.99/20,400.33
  6. Step 6: Final answer
    x = 10,875.47

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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.