Home / 39,723.21-54,815.33-21,818.97

Finding the Fourth Proportional to 39,723.21, 54,815.33 and 21,818.97

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Solution

The fourth proportional to 39,723.21, 54,815.33 and 21,818.97 is: 30,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.21 : 54,815.33 = 21,818.97 : x
  2. Step 2: Convert to fraction form
    39,723.21/54,815.33 = 21,818.97/x
  3. Step 3: Cross multiply
    39,723.21x = 54,815.33 × 21,818.97
  4. Step 4: Simplify right side
    39,723.21x = 1,196,014,095.36
  5. Step 5: Solve for x
    x = 1,196,014,095.36/39,723.21
  6. Step 6: Final answer
    x = 30,108.70

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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.