Home / 39,305.91-54,240.45-21,400.98

Finding the Fourth Proportional to 39,305.91, 54,240.45 and 21,400.98

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Solution

The fourth proportional to 39,305.91, 54,240.45 and 21,400.98 is: 29,532.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,305.91 : 54,240.45 = 21,400.98 : x
  2. Step 2: Convert to fraction form
    39,305.91/54,240.45 = 21,400.98/x
  3. Step 3: Cross multiply
    39,305.91x = 54,240.45 × 21,400.98
  4. Step 4: Simplify right side
    39,305.91x = 1,160,798,785.64
  5. Step 5: Solve for x
    x = 1,160,798,785.64/39,305.91
  6. Step 6: Final answer
    x = 29,532.42

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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.