Home / 29,121.86-40,134.87-21,150.24

Finding the Fourth Proportional to 29,121.86, 40,134.87 and 21,150.24

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Solution

The fourth proportional to 29,121.86, 40,134.87 and 21,150.24 is: 29,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121.86 : 40,134.87 = 21,150.24 : x
  2. Step 2: Convert to fraction form
    29,121.86/40,134.87 = 21,150.24/x
  3. Step 3: Cross multiply
    29,121.86x = 40,134.87 × 21,150.24
  4. Step 4: Simplify right side
    29,121.86x = 848,862,132.87
  5. Step 5: Solve for x
    x = 848,862,132.87/29,121.86
  6. Step 6: Final answer
    x = 29,148.62

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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.