Home / 13,481.80-18,605.28-7,513.96

Finding the Fourth Proportional to 13,481.80, 18,605.28 and 7,513.96

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Solution

The fourth proportional to 13,481.80, 18,605.28 and 7,513.96 is: 10,369.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.80 : 18,605.28 = 7,513.96 : x
  2. Step 2: Convert to fraction form
    13,481.80/18,605.28 = 7,513.96/x
  3. Step 3: Cross multiply
    13,481.80x = 18,605.28 × 7,513.96
  4. Step 4: Simplify right side
    13,481.80x = 139,799,329.71
  5. Step 5: Solve for x
    x = 139,799,329.71/13,481.80
  6. Step 6: Final answer
    x = 10,369.49

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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.