Home / 18,688.55-28,028.05-5,537.85

Finding the Fourth Proportional to 18,688.55, 28,028.05 and 5,537.85

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Solution

The fourth proportional to 18,688.55, 28,028.05 and 5,537.85 is: 8,305.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688.55 : 28,028.05 = 5,537.85 : x
  2. Step 2: Convert to fraction form
    18,688.55/28,028.05 = 5,537.85/x
  3. Step 3: Cross multiply
    18,688.55x = 28,028.05 × 5,537.85
  4. Step 4: Simplify right side
    18,688.55x = 155,214,968.86
  5. Step 5: Solve for x
    x = 155,214,968.86/18,688.55
  6. Step 6: Final answer
    x = 8,305.35

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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.