Home / 29,121.36-40,134.18-21,149.74

Finding the Fourth Proportional to 29,121.36, 40,134.18 and 21,149.74

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Solution

The fourth proportional to 29,121.36, 40,134.18 and 21,149.74 is: 29,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.36 : 40,134.18 = 21,149.74 : x
  2. Step 2: Convert to fraction form
    29,121.36/40,134.18 = 21,149.74/x
  3. Step 3: Cross multiply
    29,121.36x = 40,134.18 × 21,149.74
  4. Step 4: Simplify right side
    29,121.36x = 848,827,472.11
  5. Step 5: Solve for x
    x = 848,827,472.11/29,121.36
  6. Step 6: Final answer
    x = 29,147.93

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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.