Home / 21,112.04-29,121.93-13,942.02

Finding the Fourth Proportional to 21,112.04, 29,121.93 and 13,942.02

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Solution

The fourth proportional to 21,112.04, 29,121.93 and 13,942.02 is: 19,231.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.04 : 29,121.93 = 13,942.02 : x
  2. Step 2: Convert to fraction form
    21,112.04/29,121.93 = 13,942.02/x
  3. Step 3: Cross multiply
    21,112.04x = 29,121.93 × 13,942.02
  4. Step 4: Simplify right side
    21,112.04x = 406,018,530.50
  5. Step 5: Solve for x
    x = 406,018,530.50/21,112.04
  6. Step 6: Final answer
    x = 19,231.61

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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.