Home / 28,579.92-39,427.18-18,511.59

Finding the Fourth Proportional to 28,579.92, 39,427.18 and 18,511.59

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Solution

The fourth proportional to 28,579.92, 39,427.18 and 18,511.59 is: 25,537.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,579.92 : 39,427.18 = 18,511.59 : x
  2. Step 2: Convert to fraction form
    28,579.92/39,427.18 = 18,511.59/x
  3. Step 3: Cross multiply
    28,579.92x = 39,427.18 × 18,511.59
  4. Step 4: Simplify right side
    28,579.92x = 729,859,892.59
  5. Step 5: Solve for x
    x = 729,859,892.59/28,579.92
  6. Step 6: Final answer
    x = 25,537.51

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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.