Home / 13,120.18-19,669.46-5,219.30

Finding the Fourth Proportional to 13,120.18, 19,669.46 and 5,219.30

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Solution

The fourth proportional to 13,120.18, 19,669.46 and 5,219.30 is: 7,824.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,120.18 : 19,669.46 = 5,219.30 : x
  2. Step 2: Convert to fraction form
    13,120.18/19,669.46 = 5,219.30/x
  3. Step 3: Cross multiply
    13,120.18x = 19,669.46 × 5,219.30
  4. Step 4: Simplify right side
    13,120.18x = 102,660,835.66
  5. Step 5: Solve for x
    x = 102,660,835.66/13,120.18
  6. Step 6: Final answer
    x = 7,824.65

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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.