Home / 28,697.14-39,590.94-21,161.35

Finding the Fourth Proportional to 28,697.14, 39,590.94 and 21,161.35

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Solution

The fourth proportional to 28,697.14, 39,590.94 and 21,161.35 is: 29,194.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,697.14 : 39,590.94 = 21,161.35 : x
  2. Step 2: Convert to fraction form
    28,697.14/39,590.94 = 21,161.35/x
  3. Step 3: Cross multiply
    28,697.14x = 39,590.94 × 21,161.35
  4. Step 4: Simplify right side
    28,697.14x = 837,797,738.17
  5. Step 5: Solve for x
    x = 837,797,738.17/28,697.14
  6. Step 6: Final answer
    x = 29,194.47

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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.