Home / 13,909.43-19,188.58-12,317.70

Finding the Fourth Proportional to 13,909.43, 19,188.58 and 12,317.70

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Solution

The fourth proportional to 13,909.43, 19,188.58 and 12,317.70 is: 16,992.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.43 : 19,188.58 = 12,317.70 : x
  2. Step 2: Convert to fraction form
    13,909.43/19,188.58 = 12,317.70/x
  3. Step 3: Cross multiply
    13,909.43x = 19,188.58 × 12,317.70
  4. Step 4: Simplify right side
    13,909.43x = 236,359,171.87
  5. Step 5: Solve for x
    x = 236,359,171.87/13,909.43
  6. Step 6: Final answer
    x = 16,992.73

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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.