Home / 29,120.64-40,133.18-21,149.02

Finding the Fourth Proportional to 29,120.64, 40,133.18 and 21,149.02

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Solution

The fourth proportional to 29,120.64, 40,133.18 and 21,149.02 is: 29,146.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,120.64 : 40,133.18 = 21,149.02 : x
  2. Step 2: Convert to fraction form
    29,120.64/40,133.18 = 21,149.02/x
  3. Step 3: Cross multiply
    29,120.64x = 40,133.18 × 21,149.02
  4. Step 4: Simplify right side
    29,120.64x = 848,777,529.52
  5. Step 5: Solve for x
    x = 848,777,529.52/29,120.64
  6. Step 6: Final answer
    x = 29,146.94

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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.