Home / 39,703.89-54,791.47-21,800.05

Finding the Fourth Proportional to 39,703.89, 54,791.47 and 21,800.05

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Solution

The fourth proportional to 39,703.89, 54,791.47 and 21,800.05 is: 30,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,703.89 : 54,791.47 = 21,800.05 : x
  2. Step 2: Convert to fraction form
    39,703.89/54,791.47 = 21,800.05/x
  3. Step 3: Cross multiply
    39,703.89x = 54,791.47 × 21,800.05
  4. Step 4: Simplify right side
    39,703.89x = 1,194,456,977.05
  5. Step 5: Solve for x
    x = 1,194,456,977.05/39,703.89
  6. Step 6: Final answer
    x = 30,084.13

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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.