Home / 39,638.69-54,704.84-21,737.19

Finding the Fourth Proportional to 39,638.69, 54,704.84 and 21,737.19

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Solution

The fourth proportional to 39,638.69, 54,704.84 and 21,737.19 is: 29,999.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,638.69 : 54,704.84 = 21,737.19 : x
  2. Step 2: Convert to fraction form
    39,638.69/54,704.84 = 21,737.19/x
  3. Step 3: Cross multiply
    39,638.69x = 54,704.84 × 21,737.19
  4. Step 4: Simplify right side
    39,638.69x = 1,189,129,319.29
  5. Step 5: Solve for x
    x = 1,189,129,319.29/39,638.69
  6. Step 6: Final answer
    x = 29,999.21

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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.