Home / 13,677.11-18,874.41-7,389.48

Finding the Fourth Proportional to 13,677.11, 18,874.41 and 7,389.48

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Solution

The fourth proportional to 13,677.11, 18,874.41 and 7,389.48 is: 10,197.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.11 : 18,874.41 = 7,389.48 : x
  2. Step 2: Convert to fraction form
    13,677.11/18,874.41 = 7,389.48/x
  3. Step 3: Cross multiply
    13,677.11x = 18,874.41 × 7,389.48
  4. Step 4: Simplify right side
    13,677.11x = 139,472,075.21
  5. Step 5: Solve for x
    x = 139,472,075.21/13,677.11
  6. Step 6: Final answer
    x = 10,197.49

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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.