Home / 39,336.42-54,284.36-21,431.56

Finding the Fourth Proportional to 39,336.42, 54,284.36 and 21,431.56

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Solution

The fourth proportional to 39,336.42, 54,284.36 and 21,431.56 is: 29,575.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,336.42 : 54,284.36 = 21,431.56 : x
  2. Step 2: Convert to fraction form
    39,336.42/54,284.36 = 21,431.56/x
  3. Step 3: Cross multiply
    39,336.42x = 54,284.36 × 21,431.56
  4. Step 4: Simplify right side
    39,336.42x = 1,163,398,518.40
  5. Step 5: Solve for x
    x = 1,163,398,518.40/39,336.42
  6. Step 6: Final answer
    x = 29,575.61

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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.