Home / 38,145.14-57,203.64-13,178.78

Finding the Fourth Proportional to 38,145.14, 57,203.64 and 13,178.78

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Solution

The fourth proportional to 38,145.14, 57,203.64 and 13,178.78 is: 19,763.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,145.14 : 57,203.64 = 13,178.78 : x
  2. Step 2: Convert to fraction form
    38,145.14/57,203.64 = 13,178.78/x
  3. Step 3: Cross multiply
    38,145.14x = 57,203.64 × 13,178.78
  4. Step 4: Simplify right side
    38,145.14x = 753,874,186.76
  5. Step 5: Solve for x
    x = 753,874,186.76/38,145.14
  6. Step 6: Final answer
    x = 19,763.31

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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.