Home / 18,925.42-28,400.28-12,692.47

Finding the Fourth Proportional to 18,925.42, 28,400.28 and 12,692.47

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Solution

The fourth proportional to 18,925.42, 28,400.28 and 12,692.47 is: 19,046.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.42 : 28,400.28 = 12,692.47 : x
  2. Step 2: Convert to fraction form
    18,925.42/28,400.28 = 12,692.47/x
  3. Step 3: Cross multiply
    18,925.42x = 28,400.28 × 12,692.47
  4. Step 4: Simplify right side
    18,925.42x = 360,469,701.89
  5. Step 5: Solve for x
    x = 360,469,701.89/18,925.42
  6. Step 6: Final answer
    x = 19,046.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.