Home / 39,533.49-54,555.89-21,628.64

Finding the Fourth Proportional to 39,533.49, 54,555.89 and 21,628.64

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Solution

The fourth proportional to 39,533.49, 54,555.89 and 21,628.64 is: 29,847.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,533.49 : 54,555.89 = 21,628.64 : x
  2. Step 2: Convert to fraction form
    39,533.49/54,555.89 = 21,628.64/x
  3. Step 3: Cross multiply
    39,533.49x = 54,555.89 × 21,628.64
  4. Step 4: Simplify right side
    39,533.49x = 1,179,969,732.94
  5. Step 5: Solve for x
    x = 1,179,969,732.94/39,533.49
  6. Step 6: Final answer
    x = 29,847.35

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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.