Home / 13,187.68-18,199.01-7,219.36

Finding the Fourth Proportional to 13,187.68, 18,199.01 and 7,219.36

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Solution

The fourth proportional to 13,187.68, 18,199.01 and 7,219.36 is: 9,962.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.68 : 18,199.01 = 7,219.36 : x
  2. Step 2: Convert to fraction form
    13,187.68/18,199.01 = 7,219.36/x
  3. Step 3: Cross multiply
    13,187.68x = 18,199.01 × 7,219.36
  4. Step 4: Simplify right side
    13,187.68x = 131,385,245.63
  5. Step 5: Solve for x
    x = 131,385,245.63/13,187.68
  6. Step 6: Final answer
    x = 9,962.73

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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.