Home / 13,307.09-18,361.77-7,642.08

Finding the Fourth Proportional to 13,307.09, 18,361.77 and 7,642.08

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Solution

The fourth proportional to 13,307.09, 18,361.77 and 7,642.08 is: 10,544.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,307.09 : 18,361.77 = 7,642.08 : x
  2. Step 2: Convert to fraction form
    13,307.09/18,361.77 = 7,642.08/x
  3. Step 3: Cross multiply
    13,307.09x = 18,361.77 × 7,642.08
  4. Step 4: Simplify right side
    13,307.09x = 140,322,115.28
  5. Step 5: Solve for x
    x = 140,322,115.28/13,307.09
  6. Step 6: Final answer
    x = 10,544.91

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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.