Home / 38,507.73-53,140.86-21,512.69

Finding the Fourth Proportional to 38,507.73, 53,140.86 and 21,512.69

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Solution

The fourth proportional to 38,507.73, 53,140.86 and 21,512.69 is: 29,687.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.73 : 53,140.86 = 21,512.69 : x
  2. Step 2: Convert to fraction form
    38,507.73/53,140.86 = 21,512.69/x
  3. Step 3: Cross multiply
    38,507.73x = 53,140.86 × 21,512.69
  4. Step 4: Simplify right side
    38,507.73x = 1,143,202,581.81
  5. Step 5: Solve for x
    x = 1,143,202,581.81/38,507.73
  6. Step 6: Final answer
    x = 29,687.61

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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.