Home / 38,690.36-58,042.80-12,388.04

Finding the Fourth Proportional to 38,690.36, 58,042.80 and 12,388.04

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Solution

The fourth proportional to 38,690.36, 58,042.80 and 12,388.04 is: 18,584.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,690.36 : 58,042.80 = 12,388.04 : x
  2. Step 2: Convert to fraction form
    38,690.36/58,042.80 = 12,388.04/x
  3. Step 3: Cross multiply
    38,690.36x = 58,042.80 × 12,388.04
  4. Step 4: Simplify right side
    38,690.36x = 719,036,528.11
  5. Step 5: Solve for x
    x = 719,036,528.11/38,690.36
  6. Step 6: Final answer
    x = 18,584.38

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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.