Home / 13,889.72-20,830.46-7,652.70

Finding the Fourth Proportional to 13,889.72, 20,830.46 and 7,652.70

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Solution

The fourth proportional to 13,889.72, 20,830.46 and 7,652.70 is: 11,476.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.72 : 20,830.46 = 7,652.70 : x
  2. Step 2: Convert to fraction form
    13,889.72/20,830.46 = 7,652.70/x
  3. Step 3: Cross multiply
    13,889.72x = 20,830.46 × 7,652.70
  4. Step 4: Simplify right side
    13,889.72x = 159,409,222.98
  5. Step 5: Solve for x
    x = 159,409,222.98/13,889.72
  6. Step 6: Final answer
    x = 11,476.78

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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.