Home / 39,283.76-58,934.52-12,991.28

Finding the Fourth Proportional to 39,283.76, 58,934.52 and 12,991.28

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Solution

The fourth proportional to 39,283.76, 58,934.52 and 12,991.28 is: 19,489.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,283.76 : 58,934.52 = 12,991.28 : x
  2. Step 2: Convert to fraction form
    39,283.76/58,934.52 = 12,991.28/x
  3. Step 3: Cross multiply
    39,283.76x = 58,934.52 × 12,991.28
  4. Step 4: Simplify right side
    39,283.76x = 765,634,850.99
  5. Step 5: Solve for x
    x = 765,634,850.99/39,283.76
  6. Step 6: Final answer
    x = 19,489.86

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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.