Home / 14,581.14-20,121.36-8,913.90

Finding the Fourth Proportional to 14,581.14, 20,121.36 and 8,913.90

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Solution

The fourth proportional to 14,581.14, 20,121.36 and 8,913.90 is: 12,300.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.14 : 20,121.36 = 8,913.90 : x
  2. Step 2: Convert to fraction form
    14,581.14/20,121.36 = 8,913.90/x
  3. Step 3: Cross multiply
    14,581.14x = 20,121.36 × 8,913.90
  4. Step 4: Simplify right side
    14,581.14x = 179,359,790.90
  5. Step 5: Solve for x
    x = 179,359,790.90/14,581.14
  6. Step 6: Final answer
    x = 12,300.81

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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.