Home / 29,116.98-40,128.14-21,145.37

Finding the Fourth Proportional to 29,116.98, 40,128.14 and 21,145.37

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Solution

The fourth proportional to 29,116.98, 40,128.14 and 21,145.37 is: 29,141.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,116.98 : 40,128.14 = 21,145.37 : x
  2. Step 2: Convert to fraction form
    29,116.98/40,128.14 = 21,145.37/x
  3. Step 3: Cross multiply
    29,116.98x = 40,128.14 × 21,145.37
  4. Step 4: Simplify right side
    29,116.98x = 848,524,219.93
  5. Step 5: Solve for x
    x = 848,524,219.93/29,116.98
  6. Step 6: Final answer
    x = 29,141.90

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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.