Home / 38,278.35-57,429.07-11,983.32

Finding the Fourth Proportional to 38,278.35, 57,429.07 and 11,983.32

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Solution

The fourth proportional to 38,278.35, 57,429.07 and 11,983.32 is: 17,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,278.35 : 57,429.07 = 11,983.32 : x
  2. Step 2: Convert to fraction form
    38,278.35/57,429.07 = 11,983.32/x
  3. Step 3: Cross multiply
    38,278.35x = 57,429.07 × 11,983.32
  4. Step 4: Simplify right side
    38,278.35x = 688,190,893.15
  5. Step 5: Solve for x
    x = 688,190,893.15/38,278.35
  6. Step 6: Final answer
    x = 17,978.59

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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.