Home / 13,011.45-19,519.87-5,220.87

Finding the Fourth Proportional to 13,011.45, 19,519.87 and 5,220.87

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Solution

The fourth proportional to 13,011.45, 19,519.87 and 5,220.87 is: 7,832.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,011.45 : 19,519.87 = 5,220.87 : x
  2. Step 2: Convert to fraction form
    13,011.45/19,519.87 = 5,220.87/x
  3. Step 3: Cross multiply
    13,011.45x = 19,519.87 × 5,220.87
  4. Step 4: Simplify right side
    13,011.45x = 101,910,661.41
  5. Step 5: Solve for x
    x = 101,910,661.41/13,011.45
  6. Step 6: Final answer
    x = 7,832.38

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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.