Home / 40,025.55-55,235.43-21,876.64

Finding the Fourth Proportional to 40,025.55, 55,235.43 and 21,876.64

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Solution

The fourth proportional to 40,025.55, 55,235.43 and 21,876.64 is: 30,189.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025.55 : 55,235.43 = 21,876.64 : x
  2. Step 2: Convert to fraction form
    40,025.55/55,235.43 = 21,876.64/x
  3. Step 3: Cross multiply
    40,025.55x = 55,235.43 × 21,876.64
  4. Step 4: Simplify right side
    40,025.55x = 1,208,365,479.27
  5. Step 5: Solve for x
    x = 1,208,365,479.27/40,025.55
  6. Step 6: Final answer
    x = 30,189.85

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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.