Home / 39,425.52-54,406.84-21,520.64

Finding the Fourth Proportional to 39,425.52, 54,406.84 and 21,520.64

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Solution

The fourth proportional to 39,425.52, 54,406.84 and 21,520.64 is: 29,698.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,425.52 : 54,406.84 = 21,520.64 : x
  2. Step 2: Convert to fraction form
    39,425.52/54,406.84 = 21,520.64/x
  3. Step 3: Cross multiply
    39,425.52x = 54,406.84 × 21,520.64
  4. Step 4: Simplify right side
    39,425.52x = 1,170,870,017.18
  5. Step 5: Solve for x
    x = 1,170,870,017.18/39,425.52
  6. Step 6: Final answer
    x = 29,698.28

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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.