Home / 19,147.79-28,721.70-8,752.25

Finding the Fourth Proportional to 19,147.79, 28,721.70 and 8,752.25

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Solution

The fourth proportional to 19,147.79, 28,721.70 and 8,752.25 is: 13,128.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,147.79 : 28,721.70 = 8,752.25 : x
  2. Step 2: Convert to fraction form
    19,147.79/28,721.70 = 8,752.25/x
  3. Step 3: Cross multiply
    19,147.79x = 28,721.70 × 8,752.25
  4. Step 4: Simplify right side
    19,147.79x = 251,379,455.06
  5. Step 5: Solve for x
    x = 251,379,455.06/19,147.79
  6. Step 6: Final answer
    x = 13,128.38

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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.