Home / 36,686.12-50,638.90-21,578.12

Finding the Fourth Proportional to 36,686.12, 50,638.90 and 21,578.12

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Solution

The fourth proportional to 36,686.12, 50,638.90 and 21,578.12 is: 29,784.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,686.12 : 50,638.90 = 21,578.12 : x
  2. Step 2: Convert to fraction form
    36,686.12/50,638.90 = 21,578.12/x
  3. Step 3: Cross multiply
    36,686.12x = 50,638.90 × 21,578.12
  4. Step 4: Simplify right side
    36,686.12x = 1,092,692,260.87
  5. Step 5: Solve for x
    x = 1,092,692,260.87/36,686.12
  6. Step 6: Final answer
    x = 29,784.90

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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.