Home / 13,677.28-18,874.66-7,389.66

Finding the Fourth Proportional to 13,677.28, 18,874.66 and 7,389.66

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Solution

The fourth proportional to 13,677.28, 18,874.66 and 7,389.66 is: 10,197.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.28 : 18,874.66 = 7,389.66 : x
  2. Step 2: Convert to fraction form
    13,677.28/18,874.66 = 7,389.66/x
  3. Step 3: Cross multiply
    13,677.28x = 18,874.66 × 7,389.66
  4. Step 4: Simplify right side
    13,677.28x = 139,477,320.02
  5. Step 5: Solve for x
    x = 139,477,320.02/13,677.28
  6. Step 6: Final answer
    x = 10,197.74

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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.