Home / 39,321.72-54,263.22-21,416.52

Finding the Fourth Proportional to 39,321.72, 54,263.22 and 21,416.52

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Solution

The fourth proportional to 39,321.72, 54,263.22 and 21,416.52 is: 29,554.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,321.72 : 54,263.22 = 21,416.52 : x
  2. Step 2: Convert to fraction form
    39,321.72/54,263.22 = 21,416.52/x
  3. Step 3: Cross multiply
    39,321.72x = 54,263.22 × 21,416.52
  4. Step 4: Simplify right side
    39,321.72x = 1,162,129,336.39
  5. Step 5: Solve for x
    x = 1,162,129,336.39/39,321.72
  6. Step 6: Final answer
    x = 29,554.39

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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.