Home / 13,579.42-20,352.12-7,339.18

Finding the Fourth Proportional to 13,579.42, 20,352.12 and 7,339.18

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Solution

The fourth proportional to 13,579.42, 20,352.12 and 7,339.18 is: 10,999.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,579.42 : 20,352.12 = 7,339.18 : x
  2. Step 2: Convert to fraction form
    13,579.42/20,352.12 = 7,339.18/x
  3. Step 3: Cross multiply
    13,579.42x = 20,352.12 × 7,339.18
  4. Step 4: Simplify right side
    13,579.42x = 149,367,872.06
  5. Step 5: Solve for x
    x = 149,367,872.06/13,579.42
  6. Step 6: Final answer
    x = 10,999.58

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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.