Home / 18,667.75-28,000.90-4,627.81

Finding the Fourth Proportional to 18,667.75, 28,000.90 and 4,627.81

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Solution

The fourth proportional to 18,667.75, 28,000.90 and 4,627.81 is: 6,941.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,667.75 : 28,000.90 = 4,627.81 : x
  2. Step 2: Convert to fraction form
    18,667.75/28,000.90 = 4,627.81/x
  3. Step 3: Cross multiply
    18,667.75x = 28,000.90 × 4,627.81
  4. Step 4: Simplify right side
    18,667.75x = 129,582,845.03
  5. Step 5: Solve for x
    x = 129,582,845.03/18,667.75
  6. Step 6: Final answer
    x = 6,941.54

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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.