Home / 39,780.04-54,896.38-22,789.79

Finding the Fourth Proportional to 39,780.04, 54,896.38 and 22,789.79

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Solution

The fourth proportional to 39,780.04, 54,896.38 and 22,789.79 is: 31,449.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,780.04 : 54,896.38 = 22,789.79 : x
  2. Step 2: Convert to fraction form
    39,780.04/54,896.38 = 22,789.79/x
  3. Step 3: Cross multiply
    39,780.04x = 54,896.38 × 22,789.79
  4. Step 4: Simplify right side
    39,780.04x = 1,251,076,756.07
  5. Step 5: Solve for x
    x = 1,251,076,756.07/39,780.04
  6. Step 6: Final answer
    x = 31,449.86

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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.