Home / 13,219.11-18,242.49-7,554.60

Finding the Fourth Proportional to 13,219.11, 18,242.49 and 7,554.60

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Solution

The fourth proportional to 13,219.11, 18,242.49 and 7,554.60 is: 10,425.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.11 : 18,242.49 = 7,554.60 : x
  2. Step 2: Convert to fraction form
    13,219.11/18,242.49 = 7,554.60/x
  3. Step 3: Cross multiply
    13,219.11x = 18,242.49 × 7,554.60
  4. Step 4: Simplify right side
    13,219.11x = 137,814,714.95
  5. Step 5: Solve for x
    x = 137,814,714.95/13,219.11
  6. Step 6: Final answer
    x = 10,425.42

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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.