Home / 38,507.97-53,140.41-21,512.46

Finding the Fourth Proportional to 38,507.97, 53,140.41 and 21,512.46

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Solution

The fourth proportional to 38,507.97, 53,140.41 and 21,512.46 is: 29,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,507.97 : 53,140.41 = 21,512.46 : x
  2. Step 2: Convert to fraction form
    38,507.97/53,140.41 = 21,512.46/x
  3. Step 3: Cross multiply
    38,507.97x = 53,140.41 × 21,512.46
  4. Step 4: Simplify right side
    38,507.97x = 1,143,180,944.51
  5. Step 5: Solve for x
    x = 1,143,180,944.51/38,507.97
  6. Step 6: Final answer
    x = 29,686.87

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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.