Home / 13,613.93-20,412.01-5,721.49

Finding the Fourth Proportional to 13,613.93, 20,412.01 and 5,721.49

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Solution

The fourth proportional to 13,613.93, 20,412.01 and 5,721.49 is: 8,578.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.93 : 20,412.01 = 5,721.49 : x
  2. Step 2: Convert to fraction form
    13,613.93/20,412.01 = 5,721.49/x
  3. Step 3: Cross multiply
    13,613.93x = 20,412.01 × 5,721.49
  4. Step 4: Simplify right side
    13,613.93x = 116,787,111.09
  5. Step 5: Solve for x
    x = 116,787,111.09/13,613.93
  6. Step 6: Final answer
    x = 8,578.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.