Home / 15,825.80-21,830.26-9,858.44

Finding the Fourth Proportional to 15,825.80, 21,830.26 and 9,858.44

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Solution

The fourth proportional to 15,825.80, 21,830.26 and 9,858.44 is: 13,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,825.80 : 21,830.26 = 9,858.44 : x
  2. Step 2: Convert to fraction form
    15,825.80/21,830.26 = 9,858.44/x
  3. Step 3: Cross multiply
    15,825.80x = 21,830.26 × 9,858.44
  4. Step 4: Simplify right side
    15,825.80x = 215,212,308.39
  5. Step 5: Solve for x
    x = 215,212,308.39/15,825.80
  6. Step 6: Final answer
    x = 13,598.83

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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.