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Finding the Fourth Proportional to 18,750.15, 28,133.42 and 8,222.45

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Solution

The fourth proportional to 18,750.15, 28,133.42 and 8,222.45 is: 12,337.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,750.15 : 28,133.42 = 8,222.45 : x
  2. Step 2: Convert to fraction form
    18,750.15/28,133.42 = 8,222.45/x
  3. Step 3: Cross multiply
    18,750.15x = 28,133.42 × 8,222.45
  4. Step 4: Simplify right side
    18,750.15x = 231,325,457.50
  5. Step 5: Solve for x
    x = 231,325,457.50/18,750.15
  6. Step 6: Final answer
    x = 12,337.26

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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.