Home / 20,494.89-28,272.25-12,938.50

Finding the Fourth Proportional to 20,494.89, 28,272.25 and 12,938.50

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Solution

The fourth proportional to 20,494.89, 28,272.25 and 12,938.50 is: 17,848.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,494.89 : 28,272.25 = 12,938.50 : x
  2. Step 2: Convert to fraction form
    20,494.89/28,272.25 = 12,938.50/x
  3. Step 3: Cross multiply
    20,494.89x = 28,272.25 × 12,938.50
  4. Step 4: Simplify right side
    20,494.89x = 365,800,506.63
  5. Step 5: Solve for x
    x = 365,800,506.63/20,494.89
  6. Step 6: Final answer
    x = 17,848.38

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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.