Home / 13,422.72-18,522-7,836.96

Finding the Fourth Proportional to 13,422.72, 18,522 and 7,836.96

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Solution

The fourth proportional to 13,422.72, 18,522 and 7,836.96 is: 10,814.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.72 : 18,522 = 7,836.96 : x
  2. Step 2: Convert to fraction form
    13,422.72/18,522 = 7,836.96/x
  3. Step 3: Cross multiply
    13,422.72x = 18,522 × 7,836.96
  4. Step 4: Simplify right side
    13,422.72x = 145,156,173.12
  5. Step 5: Solve for x
    x = 145,156,173.12/13,422.72
  6. Step 6: Final answer
    x = 10,814.21

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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.