Home / 39,355.17-54,310.40-21,450.12

Finding the Fourth Proportional to 39,355.17, 54,310.40 and 21,450.12

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Solution

The fourth proportional to 39,355.17, 54,310.40 and 21,450.12 is: 29,601.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.17 : 54,310.40 = 21,450.12 : x
  2. Step 2: Convert to fraction form
    39,355.17/54,310.40 = 21,450.12/x
  3. Step 3: Cross multiply
    39,355.17x = 54,310.40 × 21,450.12
  4. Step 4: Simplify right side
    39,355.17x = 1,164,964,490.00
  5. Step 5: Solve for x
    x = 1,164,964,490.00/39,355.17
  6. Step 6: Final answer
    x = 29,601.31

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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.