Home / 28,603.46-39,469.01-15,855.99

Finding the Fourth Proportional to 28,603.46, 39,469.01 and 15,855.99

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Solution

The fourth proportional to 28,603.46, 39,469.01 and 15,855.99 is: 21,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,603.46 : 39,469.01 = 15,855.99 : x
  2. Step 2: Convert to fraction form
    28,603.46/39,469.01 = 15,855.99/x
  3. Step 3: Cross multiply
    28,603.46x = 39,469.01 × 15,855.99
  4. Step 4: Simplify right side
    28,603.46x = 625,820,000.58
  5. Step 5: Solve for x
    x = 625,820,000.58/28,603.46
  6. Step 6: Final answer
    x = 21,879.17

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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.