Home / 38,817.80-58,239.01-13,857.31

Finding the Fourth Proportional to 38,817.80, 58,239.01 and 13,857.31

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Solution

The fourth proportional to 38,817.80, 58,239.01 and 13,857.31 is: 20,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,817.80 : 58,239.01 = 13,857.31 : x
  2. Step 2: Convert to fraction form
    38,817.80/58,239.01 = 13,857.31/x
  3. Step 3: Cross multiply
    38,817.80x = 58,239.01 × 13,857.31
  4. Step 4: Simplify right side
    38,817.80x = 807,035,946.38
  5. Step 5: Solve for x
    x = 807,035,946.38/38,817.80
  6. Step 6: Final answer
    x = 20,790.36

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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.