Home / 21,272.08-29,357.40-11,842.96

Finding the Fourth Proportional to 21,272.08, 29,357.40 and 11,842.96

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Solution

The fourth proportional to 21,272.08, 29,357.40 and 11,842.96 is: 16,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,272.08 : 29,357.40 = 11,842.96 : x
  2. Step 2: Convert to fraction form
    21,272.08/29,357.40 = 11,842.96/x
  3. Step 3: Cross multiply
    21,272.08x = 29,357.40 × 11,842.96
  4. Step 4: Simplify right side
    21,272.08x = 347,678,513.90
  5. Step 5: Solve for x
    x = 347,678,513.90/21,272.08
  6. Step 6: Final answer
    x = 16,344.36

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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.