Home / 28,291.20-38,980.08-18,843.36

Finding the Fourth Proportional to 28,291.20, 38,980.08 and 18,843.36

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Solution

The fourth proportional to 28,291.20, 38,980.08 and 18,843.36 is: 25,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,291.20 : 38,980.08 = 18,843.36 : x
  2. Step 2: Convert to fraction form
    28,291.20/38,980.08 = 18,843.36/x
  3. Step 3: Cross multiply
    28,291.20x = 38,980.08 × 18,843.36
  4. Step 4: Simplify right side
    28,291.20x = 734,515,680.27
  5. Step 5: Solve for x
    x = 734,515,680.27/28,291.20
  6. Step 6: Final answer
    x = 25,962.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.