Home / 20,925.21-28,876.77-11,494.38

Finding the Fourth Proportional to 20,925.21, 28,876.77 and 11,494.38

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Solution

The fourth proportional to 20,925.21, 28,876.77 and 11,494.38 is: 15,862.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.21 : 28,876.77 = 11,494.38 : x
  2. Step 2: Convert to fraction form
    20,925.21/28,876.77 = 11,494.38/x
  3. Step 3: Cross multiply
    20,925.21x = 28,876.77 × 11,494.38
  4. Step 4: Simplify right side
    20,925.21x = 331,920,567.55
  5. Step 5: Solve for x
    x = 331,920,567.55/20,925.21
  6. Step 6: Final answer
    x = 15,862.23

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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.