Home / 39,189.16-54,079.86-21,283.84

Finding the Fourth Proportional to 39,189.16, 54,079.86 and 21,283.84

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Solution

The fourth proportional to 39,189.16, 54,079.86 and 21,283.84 is: 29,371.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,189.16 : 54,079.86 = 21,283.84 : x
  2. Step 2: Convert to fraction form
    39,189.16/54,079.86 = 21,283.84/x
  3. Step 3: Cross multiply
    39,189.16x = 54,079.86 × 21,283.84
  4. Step 4: Simplify right side
    39,189.16x = 1,151,027,087.46
  5. Step 5: Solve for x
    x = 1,151,027,087.46/39,189.16
  6. Step 6: Final answer
    x = 29,371.06

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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.