Home / 13,222.78-18,247.35-7,254.70

Finding the Fourth Proportional to 13,222.78, 18,247.35 and 7,254.70

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Solution

The fourth proportional to 13,222.78, 18,247.35 and 7,254.70 is: 10,011.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,222.78 : 18,247.35 = 7,254.70 : x
  2. Step 2: Convert to fraction form
    13,222.78/18,247.35 = 7,254.70/x
  3. Step 3: Cross multiply
    13,222.78x = 18,247.35 × 7,254.70
  4. Step 4: Simplify right side
    13,222.78x = 132,379,050.05
  5. Step 5: Solve for x
    x = 132,379,050.05/13,222.78
  6. Step 6: Final answer
    x = 10,011.44

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1.5x scale

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.