Home / 38,779.32-58,186.26-20,307

Finding the Fourth Proportional to 38,779.32, 58,186.26 and 20,307

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Solution

The fourth proportional to 38,779.32, 58,186.26 and 20,307 is: 30,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,779.32 : 58,186.26 = 20,307 : x
  2. Step 2: Convert to fraction form
    38,779.32/58,186.26 = 20,307/x
  3. Step 3: Cross multiply
    38,779.32x = 58,186.26 × 20,307
  4. Step 4: Simplify right side
    38,779.32x = 1,181,588,381.82
  5. Step 5: Solve for x
    x = 1,181,588,381.82/38,779.32
  6. Step 6: Final answer
    x = 30,469.55

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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.