Home / 36,780.69-50,761.08-21,678.21

Finding the Fourth Proportional to 36,780.69, 50,761.08 and 21,678.21

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Solution

The fourth proportional to 36,780.69, 50,761.08 and 21,678.21 is: 29,918.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,780.69 : 50,761.08 = 21,678.21 : x
  2. Step 2: Convert to fraction form
    36,780.69/50,761.08 = 21,678.21/x
  3. Step 3: Cross multiply
    36,780.69x = 50,761.08 × 21,678.21
  4. Step 4: Simplify right side
    36,780.69x = 1,100,409,352.07
  5. Step 5: Solve for x
    x = 1,100,409,352.07/36,780.69
  6. Step 6: Final answer
    x = 29,918.13

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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.