Home / 39,186.77-54,077.73-21,281.79

Finding the Fourth Proportional to 39,186.77, 54,077.73 and 21,281.79

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Solution

The fourth proportional to 39,186.77, 54,077.73 and 21,281.79 is: 29,368.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,186.77 : 54,077.73 = 21,281.79 : x
  2. Step 2: Convert to fraction form
    39,186.77/54,077.73 = 21,281.79/x
  3. Step 3: Cross multiply
    39,186.77x = 54,077.73 × 21,281.79
  4. Step 4: Simplify right side
    39,186.77x = 1,150,870,893.54
  5. Step 5: Solve for x
    x = 1,150,870,893.54/39,186.77
  6. Step 6: Final answer
    x = 29,368.86

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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.