Home / 39,083.80-53,935.86-21,178.82

Finding the Fourth Proportional to 39,083.80, 53,935.86 and 21,178.82

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Solution

The fourth proportional to 39,083.80, 53,935.86 and 21,178.82 is: 29,226.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,083.80 : 53,935.86 = 21,178.82 : x
  2. Step 2: Convert to fraction form
    39,083.80/53,935.86 = 21,178.82/x
  3. Step 3: Cross multiply
    39,083.80x = 53,935.86 × 21,178.82
  4. Step 4: Simplify right side
    39,083.80x = 1,142,297,870.49
  5. Step 5: Solve for x
    x = 1,142,297,870.49/39,083.80
  6. Step 6: Final answer
    x = 29,226.89

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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.