Home / 20,674.68-28,544.24-13,613.28

Finding the Fourth Proportional to 20,674.68, 28,544.24 and 13,613.28

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Solution

The fourth proportional to 20,674.68, 28,544.24 and 13,613.28 is: 18,795.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.68 : 28,544.24 = 13,613.28 : x
  2. Step 2: Convert to fraction form
    20,674.68/28,544.24 = 13,613.28/x
  3. Step 3: Cross multiply
    20,674.68x = 28,544.24 × 13,613.28
  4. Step 4: Simplify right side
    20,674.68x = 388,580,731.51
  5. Step 5: Solve for x
    x = 388,580,731.51/20,674.68
  6. Step 6: Final answer
    x = 18,795.01

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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.