Home / 20,746.67-28,631-11,315.75

Finding the Fourth Proportional to 20,746.67, 28,631 and 11,315.75

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Solution

The fourth proportional to 20,746.67, 28,631 and 11,315.75 is: 15,616.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,746.67 : 28,631 = 11,315.75 : x
  2. Step 2: Convert to fraction form
    20,746.67/28,631 = 11,315.75/x
  3. Step 3: Cross multiply
    20,746.67x = 28,631 × 11,315.75
  4. Step 4: Simplify right side
    20,746.67x = 323,981,238.25
  5. Step 5: Solve for x
    x = 323,981,238.25/20,746.67
  6. Step 6: Final answer
    x = 15,616.06

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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.