Home / 13,063.12-18,029.72-7,760.88

Finding the Fourth Proportional to 13,063.12, 18,029.72 and 7,760.88

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Solution

The fourth proportional to 13,063.12, 18,029.72 and 7,760.88 is: 10,711.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,063.12 : 18,029.72 = 7,760.88 : x
  2. Step 2: Convert to fraction form
    13,063.12/18,029.72 = 7,760.88/x
  3. Step 3: Cross multiply
    13,063.12x = 18,029.72 × 7,760.88
  4. Step 4: Simplify right side
    13,063.12x = 139,926,493.35
  5. Step 5: Solve for x
    x = 139,926,493.35/13,063.12
  6. Step 6: Final answer
    x = 10,711.57

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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.