Home / 38,146.05-57,221.59-13,188.51

Finding the Fourth Proportional to 38,146.05, 57,221.59 and 13,188.51

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Solution

The fourth proportional to 38,146.05, 57,221.59 and 13,188.51 is: 19,783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,146.05 : 57,221.59 = 13,188.51 : x
  2. Step 2: Convert to fraction form
    38,146.05/57,221.59 = 13,188.51/x
  3. Step 3: Cross multiply
    38,146.05x = 57,221.59 × 13,188.51
  4. Step 4: Simplify right side
    38,146.05x = 754,667,511.93
  5. Step 5: Solve for x
    x = 754,667,511.93/38,146.05
  6. Step 6: Final answer
    x = 19,783.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.