Home / 20,925.42-28,877.49-11,494.50

Finding the Fourth Proportional to 20,925.42, 28,877.49 and 11,494.50

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Solution

The fourth proportional to 20,925.42, 28,877.49 and 11,494.50 is: 15,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.42 : 28,877.49 = 11,494.50 : x
  2. Step 2: Convert to fraction form
    20,925.42/28,877.49 = 11,494.50/x
  3. Step 3: Cross multiply
    20,925.42x = 28,877.49 × 11,494.50
  4. Step 4: Simplify right side
    20,925.42x = 331,932,308.81
  5. Step 5: Solve for x
    x = 331,932,308.81/20,925.42
  6. Step 6: Final answer
    x = 15,862.64

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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.