Home / 13,604.29-18,771.55-7,636.21

Finding the Fourth Proportional to 13,604.29, 18,771.55 and 7,636.21

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Solution

The fourth proportional to 13,604.29, 18,771.55 and 7,636.21 is: 10,536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,604.29 : 18,771.55 = 7,636.21 : x
  2. Step 2: Convert to fraction form
    13,604.29/18,771.55 = 7,636.21/x
  3. Step 3: Cross multiply
    13,604.29x = 18,771.55 × 7,636.21
  4. Step 4: Simplify right side
    13,604.29x = 143,343,431.81
  5. Step 5: Solve for x
    x = 143,343,431.81/13,604.29
  6. Step 6: Final answer
    x = 10,536.64

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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.