Home / 39,288.14-54,215.86-21,383.10

Finding the Fourth Proportional to 39,288.14, 54,215.86 and 21,383.10

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Solution

The fourth proportional to 39,288.14, 54,215.86 and 21,383.10 is: 29,507.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,288.14 : 54,215.86 = 21,383.10 : x
  2. Step 2: Convert to fraction form
    39,288.14/54,215.86 = 21,383.10/x
  3. Step 3: Cross multiply
    39,288.14x = 54,215.86 × 21,383.10
  4. Step 4: Simplify right side
    39,288.14x = 1,159,303,155.97
  5. Step 5: Solve for x
    x = 1,159,303,155.97/39,288.14
  6. Step 6: Final answer
    x = 29,507.71

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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.