Home / 19,987.07-29,980.70-5,194.94

Finding the Fourth Proportional to 19,987.07, 29,980.70 and 5,194.94

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Solution

The fourth proportional to 19,987.07, 29,980.70 and 5,194.94 is: 7,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.07 : 29,980.70 = 5,194.94 : x
  2. Step 2: Convert to fraction form
    19,987.07/29,980.70 = 5,194.94/x
  3. Step 3: Cross multiply
    19,987.07x = 29,980.70 × 5,194.94
  4. Step 4: Simplify right side
    19,987.07x = 155,747,937.66
  5. Step 5: Solve for x
    x = 155,747,937.66/19,987.07
  6. Step 6: Final answer
    x = 7,792.43

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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.