Home / 13,449.14-18,559.54-7,480.68

Finding the Fourth Proportional to 13,449.14, 18,559.54 and 7,480.68

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Solution

The fourth proportional to 13,449.14, 18,559.54 and 7,480.68 is: 10,323.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,449.14 : 18,559.54 = 7,480.68 : x
  2. Step 2: Convert to fraction form
    13,449.14/18,559.54 = 7,480.68/x
  3. Step 3: Cross multiply
    13,449.14x = 18,559.54 × 7,480.68
  4. Step 4: Simplify right side
    13,449.14x = 138,837,979.69
  5. Step 5: Solve for x
    x = 138,837,979.69/13,449.14
  6. Step 6: Final answer
    x = 10,323.19

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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.