Home / 38,981.81-58,476.36-12,679.49

Finding the Fourth Proportional to 38,981.81, 58,476.36 and 12,679.49

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Solution

The fourth proportional to 38,981.81, 58,476.36 and 12,679.49 is: 19,020.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,981.81 : 58,476.36 = 12,679.49 : x
  2. Step 2: Convert to fraction form
    38,981.81/58,476.36 = 12,679.49/x
  3. Step 3: Cross multiply
    38,981.81x = 58,476.36 × 12,679.49
  4. Step 4: Simplify right side
    38,981.81x = 741,450,615.60
  5. Step 5: Solve for x
    x = 741,450,615.60/38,981.81
  6. Step 6: Final answer
    x = 19,020.42

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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.