Home / 38,779.56-58,120.56-21,009.54

Finding the Fourth Proportional to 38,779.56, 58,120.56 and 21,009.54

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Solution

The fourth proportional to 38,779.56, 58,120.56 and 21,009.54 is: 31,487.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779.56 : 58,120.56 = 21,009.54 : x
  2. Step 2: Convert to fraction form
    38,779.56/58,120.56 = 21,009.54/x
  3. Step 3: Cross multiply
    38,779.56x = 58,120.56 × 21,009.54
  4. Step 4: Simplify right side
    38,779.56x = 1,221,086,230.14
  5. Step 5: Solve for x
    x = 1,221,086,230.14/38,779.56
  6. Step 6: Final answer
    x = 31,487.88

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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.