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Finding the Fourth Proportional to 18,860.58, 28,237.41 and 15,672.42

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Solution

The fourth proportional to 18,860.58, 28,237.41 and 15,672.42 is: 23,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,860.58 : 28,237.41 = 15,672.42 : x
  2. Step 2: Convert to fraction form
    18,860.58/28,237.41 = 15,672.42/x
  3. Step 3: Cross multiply
    18,860.58x = 28,237.41 × 15,672.42
  4. Step 4: Simplify right side
    18,860.58x = 442,548,549.23
  5. Step 5: Solve for x
    x = 442,548,549.23/18,860.58
  6. Step 6: Final answer
    x = 23,464.21

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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.