Home / 29,128.48-40,181.07-20,181.22

Finding the Fourth Proportional to 29,128.48, 40,181.07 and 20,181.22

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Solution

The fourth proportional to 29,128.48, 40,181.07 and 20,181.22 is: 27,838.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,128.48 : 40,181.07 = 20,181.22 : x
  2. Step 2: Convert to fraction form
    29,128.48/40,181.07 = 20,181.22/x
  3. Step 3: Cross multiply
    29,128.48x = 40,181.07 × 20,181.22
  4. Step 4: Simplify right side
    29,128.48x = 810,903,013.51
  5. Step 5: Solve for x
    x = 810,903,013.51/29,128.48
  6. Step 6: Final answer
    x = 27,838.84

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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.