Home / 13,736.12-18,955.68-7,448.42

Finding the Fourth Proportional to 13,736.12, 18,955.68 and 7,448.42

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Solution

The fourth proportional to 13,736.12, 18,955.68 and 7,448.42 is: 10,278.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,736.12 : 18,955.68 = 7,448.42 : x
  2. Step 2: Convert to fraction form
    13,736.12/18,955.68 = 7,448.42/x
  3. Step 3: Cross multiply
    13,736.12x = 18,955.68 × 7,448.42
  4. Step 4: Simplify right side
    13,736.12x = 141,189,866.03
  5. Step 5: Solve for x
    x = 141,189,866.03/13,736.12
  6. Step 6: Final answer
    x = 10,278.73

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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.