Home / 13,115.53-18,090.43-7,806.25

Finding the Fourth Proportional to 13,115.53, 18,090.43 and 7,806.25

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Solution

The fourth proportional to 13,115.53, 18,090.43 and 7,806.25 is: 10,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,115.53 : 18,090.43 = 7,806.25 : x
  2. Step 2: Convert to fraction form
    13,115.53/18,090.43 = 7,806.25/x
  3. Step 3: Cross multiply
    13,115.53x = 18,090.43 × 7,806.25
  4. Step 4: Simplify right side
    13,115.53x = 141,218,419.19
  5. Step 5: Solve for x
    x = 141,218,419.19/13,115.53
  6. Step 6: Final answer
    x = 10,767.27

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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.