Home / 28,828.93-39,738.45-21,250.98

Finding the Fourth Proportional to 28,828.93, 39,738.45 and 21,250.98

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Solution

The fourth proportional to 28,828.93, 39,738.45 and 21,250.98 is: 29,292.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,828.93 : 39,738.45 = 21,250.98 : x
  2. Step 2: Convert to fraction form
    28,828.93/39,738.45 = 21,250.98/x
  3. Step 3: Cross multiply
    28,828.93x = 39,738.45 × 21,250.98
  4. Step 4: Simplify right side
    28,828.93x = 844,481,006.18
  5. Step 5: Solve for x
    x = 844,481,006.18/28,828.93
  6. Step 6: Final answer
    x = 29,292.83

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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.