Home / 28,291.92-39,043.68-15,545.89

Finding the Fourth Proportional to 28,291.92, 39,043.68 and 15,545.89

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Solution

The fourth proportional to 28,291.92, 39,043.68 and 15,545.89 is: 21,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.92 : 39,043.68 = 15,545.89 : x
  2. Step 2: Convert to fraction form
    28,291.92/39,043.68 = 15,545.89/x
  3. Step 3: Cross multiply
    28,291.92x = 39,043.68 × 15,545.89
  4. Step 4: Simplify right side
    28,291.92x = 606,968,832.43
  5. Step 5: Solve for x
    x = 606,968,832.43/28,291.92
  6. Step 6: Final answer
    x = 21,453.79

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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.