Home / 39,611.24-54,662.64-21,705.86

Finding the Fourth Proportional to 39,611.24, 54,662.64 and 21,705.86

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Solution

The fourth proportional to 39,611.24, 54,662.64 and 21,705.86 is: 29,953.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,611.24 : 54,662.64 = 21,705.86 : x
  2. Step 2: Convert to fraction form
    39,611.24/54,662.64 = 21,705.86/x
  3. Step 3: Cross multiply
    39,611.24x = 54,662.64 × 21,705.86
  4. Step 4: Simplify right side
    39,611.24x = 1,186,499,611.07
  5. Step 5: Solve for x
    x = 1,186,499,611.07/39,611.24
  6. Step 6: Final answer
    x = 29,953.61

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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.