Home / 18,715.28-28,072.90-5,567.62

Finding the Fourth Proportional to 18,715.28, 28,072.90 and 5,567.62

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Solution

The fourth proportional to 18,715.28, 28,072.90 and 5,567.62 is: 8,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715.28 : 28,072.90 = 5,567.62 : x
  2. Step 2: Convert to fraction form
    18,715.28/28,072.90 = 5,567.62/x
  3. Step 3: Cross multiply
    18,715.28x = 28,072.90 × 5,567.62
  4. Step 4: Simplify right side
    18,715.28x = 156,299,239.50
  5. Step 5: Solve for x
    x = 156,299,239.50/18,715.28
  6. Step 6: Final answer
    x = 8,351.42

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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.