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Finding the Fourth Proportional to 18,952.71, 28,391.00 and 9,436.35

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Solution

The fourth proportional to 18,952.71, 28,391.00 and 9,436.35 is: 14,135.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.71 : 28,391.00 = 9,436.35 : x
  2. Step 2: Convert to fraction form
    18,952.71/28,391.00 = 9,436.35/x
  3. Step 3: Cross multiply
    18,952.71x = 28,391.00 × 9,436.35
  4. Step 4: Simplify right side
    18,952.71x = 267,907,365.67
  5. Step 5: Solve for x
    x = 267,907,365.67/18,952.71
  6. Step 6: Final answer
    x = 14,135.57

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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.