Home / 39,854.55-54,999.63-21,950.18

Finding the Fourth Proportional to 39,854.55, 54,999.63 and 21,950.18

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Solution

The fourth proportional to 39,854.55, 54,999.63 and 21,950.18 is: 30,291.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,854.55 : 54,999.63 = 21,950.18 : x
  2. Step 2: Convert to fraction form
    39,854.55/54,999.63 = 21,950.18/x
  3. Step 3: Cross multiply
    39,854.55x = 54,999.63 × 21,950.18
  4. Step 4: Simplify right side
    39,854.55x = 1,207,251,503.44
  5. Step 5: Solve for x
    x = 1,207,251,503.44/39,854.55
  6. Step 6: Final answer
    x = 30,291.43

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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.