Home / 18,861.40-28,281.30-16,729.48

Finding the Fourth Proportional to 18,861.40, 28,281.30 and 16,729.48

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Solution

The fourth proportional to 18,861.40, 28,281.30 and 16,729.48 is: 25,084.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,861.40 : 28,281.30 = 16,729.48 : x
  2. Step 2: Convert to fraction form
    18,861.40/28,281.30 = 16,729.48/x
  3. Step 3: Cross multiply
    18,861.40x = 28,281.30 × 16,729.48
  4. Step 4: Simplify right side
    18,861.40x = 473,131,442.72
  5. Step 5: Solve for x
    x = 473,131,442.72/18,861.40
  6. Step 6: Final answer
    x = 25,084.64

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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.