Home / 14,909.85-20,575.25-8,103.71

Finding the Fourth Proportional to 14,909.85, 20,575.25 and 8,103.71

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Solution

The fourth proportional to 14,909.85, 20,575.25 and 8,103.71 is: 11,182.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,909.85 : 20,575.25 = 8,103.71 : x
  2. Step 2: Convert to fraction form
    14,909.85/20,575.25 = 8,103.71/x
  3. Step 3: Cross multiply
    14,909.85x = 20,575.25 × 8,103.71
  4. Step 4: Simplify right side
    14,909.85x = 166,735,870.10
  5. Step 5: Solve for x
    x = 166,735,870.10/14,909.85
  6. Step 6: Final answer
    x = 11,182.93

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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.