Home / 28,553.19-42,830.09-12,759

Finding the Fourth Proportional to 28,553.19, 42,830.09 and 12,759

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Solution

The fourth proportional to 28,553.19, 42,830.09 and 12,759 is: 19,138.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,553.19 : 42,830.09 = 12,759 : x
  2. Step 2: Convert to fraction form
    28,553.19/42,830.09 = 12,759/x
  3. Step 3: Cross multiply
    28,553.19x = 42,830.09 × 12,759
  4. Step 4: Simplify right side
    28,553.19x = 546,469,054.52
  5. Step 5: Solve for x
    x = 546,469,054.52/28,553.19
  6. Step 6: Final answer
    x = 19,138.63

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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.