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Finding the Fourth Proportional to 18,675.84, 28,023.52 and 12,100.32

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Solution

The fourth proportional to 18,675.84, 28,023.52 and 12,100.32 is: 18,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.84 : 28,023.52 = 12,100.32 : x
  2. Step 2: Convert to fraction form
    18,675.84/28,023.52 = 12,100.32/x
  3. Step 3: Cross multiply
    18,675.84x = 28,023.52 × 12,100.32
  4. Step 4: Simplify right side
    18,675.84x = 339,093,559.53
  5. Step 5: Solve for x
    x = 339,093,559.53/18,675.84
  6. Step 6: Final answer
    x = 18,156.80

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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.