Home / 20,681.14-28,524.67-13,120.94

Finding the Fourth Proportional to 20,681.14, 28,524.67 and 13,120.94

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Solution

The fourth proportional to 20,681.14, 28,524.67 and 13,120.94 is: 18,097.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.14 : 28,524.67 = 13,120.94 : x
  2. Step 2: Convert to fraction form
    20,681.14/28,524.67 = 13,120.94/x
  3. Step 3: Cross multiply
    20,681.14x = 28,524.67 × 13,120.94
  4. Step 4: Simplify right side
    20,681.14x = 374,270,483.59
  5. Step 5: Solve for x
    x = 374,270,483.59/20,681.14
  6. Step 6: Final answer
    x = 18,097.19

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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.