Home / 39,789.63-54,908.28-21,883.50

Finding the Fourth Proportional to 39,789.63, 54,908.28 and 21,883.50

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Solution

The fourth proportional to 39,789.63, 54,908.28 and 21,883.50 is: 30,198.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,789.63 : 54,908.28 = 21,883.50 : x
  2. Step 2: Convert to fraction form
    39,789.63/54,908.28 = 21,883.50/x
  3. Step 3: Cross multiply
    39,789.63x = 54,908.28 × 21,883.50
  4. Step 4: Simplify right side
    39,789.63x = 1,201,585,345.38
  5. Step 5: Solve for x
    x = 1,201,585,345.38/39,789.63
  6. Step 6: Final answer
    x = 30,198.45

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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.