Home / 39,309.41-54,245.13-21,404.34

Finding the Fourth Proportional to 39,309.41, 54,245.13 and 21,404.34

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Solution

The fourth proportional to 39,309.41, 54,245.13 and 21,404.34 is: 29,536.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,309.41 : 54,245.13 = 21,404.34 : x
  2. Step 2: Convert to fraction form
    39,309.41/54,245.13 = 21,404.34/x
  3. Step 3: Cross multiply
    39,309.41x = 54,245.13 × 21,404.34
  4. Step 4: Simplify right side
    39,309.41x = 1,161,081,205.86
  5. Step 5: Solve for x
    x = 1,161,081,205.86/39,309.41
  6. Step 6: Final answer
    x = 29,536.98

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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.