Home / 39,661.83-54,732.94-21,756.88

Finding the Fourth Proportional to 39,661.83, 54,732.94 and 21,756.88

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Solution

The fourth proportional to 39,661.83, 54,732.94 and 21,756.88 is: 30,024.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,661.83 : 54,732.94 = 21,756.88 : x
  2. Step 2: Convert to fraction form
    39,661.83/54,732.94 = 21,756.88/x
  3. Step 3: Cross multiply
    39,661.83x = 54,732.94 × 21,756.88
  4. Step 4: Simplify right side
    39,661.83x = 1,190,818,007.63
  5. Step 5: Solve for x
    x = 1,190,818,007.63/39,661.83
  6. Step 6: Final answer
    x = 30,024.28

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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.