Home / 13,199.09-18,218.45-7,609.01

Finding the Fourth Proportional to 13,199.09, 18,218.45 and 7,609.01

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Solution

The fourth proportional to 13,199.09, 18,218.45 and 7,609.01 is: 10,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,199.09 : 18,218.45 = 7,609.01 : x
  2. Step 2: Convert to fraction form
    13,199.09/18,218.45 = 7,609.01/x
  3. Step 3: Cross multiply
    13,199.09x = 18,218.45 × 7,609.01
  4. Step 4: Simplify right side
    13,199.09x = 138,624,296.16
  5. Step 5: Solve for x
    x = 138,624,296.16/13,199.09
  6. Step 6: Final answer
    x = 10,502.57

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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.