Home / 18,830.52-28,255.05-13,319.28

Finding the Fourth Proportional to 18,830.52, 28,255.05 and 13,319.28

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Solution

The fourth proportional to 18,830.52, 28,255.05 and 13,319.28 is: 19,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,830.52 : 28,255.05 = 13,319.28 : x
  2. Step 2: Convert to fraction form
    18,830.52/28,255.05 = 13,319.28/x
  3. Step 3: Cross multiply
    18,830.52x = 28,255.05 × 13,319.28
  4. Step 4: Simplify right side
    18,830.52x = 376,336,922.36
  5. Step 5: Solve for x
    x = 376,336,922.36/18,830.52
  6. Step 6: Final answer
    x = 19,985.48

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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.