Home / 28,723.50-39,636-16,147.44

Finding the Fourth Proportional to 28,723.50, 39,636 and 16,147.44

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Solution

The fourth proportional to 28,723.50, 39,636 and 16,147.44 is: 22,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,723.50 : 39,636 = 16,147.44 : x
  2. Step 2: Convert to fraction form
    28,723.50/39,636 = 16,147.44/x
  3. Step 3: Cross multiply
    28,723.50x = 39,636 × 16,147.44
  4. Step 4: Simplify right side
    28,723.50x = 640,019,931.84
  5. Step 5: Solve for x
    x = 640,019,931.84/28,723.50
  6. Step 6: Final answer
    x = 22,282.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.