Home / 39,723.12-54,818.82-21,818.49

Finding the Fourth Proportional to 39,723.12, 54,818.82 and 21,818.49

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Solution

The fourth proportional to 39,723.12, 54,818.82 and 21,818.49 is: 30,110.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,723.12 : 54,818.82 = 21,818.49 : x
  2. Step 2: Convert to fraction form
    39,723.12/54,818.82 = 21,818.49/x
  3. Step 3: Cross multiply
    39,723.12x = 54,818.82 × 21,818.49
  4. Step 4: Simplify right side
    39,723.12x = 1,196,063,875.98
  5. Step 5: Solve for x
    x = 1,196,063,875.98/39,723.12
  6. Step 6: Final answer
    x = 30,110.02

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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.