Home / 39,321.50-54,263.39-21,416.45

Finding the Fourth Proportional to 39,321.50, 54,263.39 and 21,416.45

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Solution

The fourth proportional to 39,321.50, 54,263.39 and 21,416.45 is: 29,554.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,321.50 : 54,263.39 = 21,416.45 : x
  2. Step 2: Convert to fraction form
    39,321.50/54,263.39 = 21,416.45/x
  3. Step 3: Cross multiply
    39,321.50x = 54,263.39 × 21,416.45
  4. Step 4: Simplify right side
    39,321.50x = 1,162,128,800.37
  5. Step 5: Solve for x
    x = 1,162,128,800.37/39,321.50
  6. Step 6: Final answer
    x = 29,554.54

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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.