Home / 14,913.70-20,581.21-8,199.61

Finding the Fourth Proportional to 14,913.70, 20,581.21 and 8,199.61

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Solution

The fourth proportional to 14,913.70, 20,581.21 and 8,199.61 is: 11,315.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,913.70 : 20,581.21 = 8,199.61 : x
  2. Step 2: Convert to fraction form
    14,913.70/20,581.21 = 8,199.61/x
  3. Step 3: Cross multiply
    14,913.70x = 20,581.21 × 8,199.61
  4. Step 4: Simplify right side
    14,913.70x = 168,757,854.12
  5. Step 5: Solve for x
    x = 168,757,854.12/14,913.70
  6. Step 6: Final answer
    x = 11,315.63

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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.