Home / 18,968.61-28,451.55-5,820.19

Finding the Fourth Proportional to 18,968.61, 28,451.55 and 5,820.19

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Solution

The fourth proportional to 18,968.61, 28,451.55 and 5,820.19 is: 8,729.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.61 : 28,451.55 = 5,820.19 : x
  2. Step 2: Convert to fraction form
    18,968.61/28,451.55 = 5,820.19/x
  3. Step 3: Cross multiply
    18,968.61x = 28,451.55 × 5,820.19
  4. Step 4: Simplify right side
    18,968.61x = 165,593,377.49
  5. Step 5: Solve for x
    x = 165,593,377.49/18,968.61
  6. Step 6: Final answer
    x = 8,729.86

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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.