Home / 19,865.88-27,416.39-12,313.70

Finding the Fourth Proportional to 19,865.88, 27,416.39 and 12,313.70

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Solution

The fourth proportional to 19,865.88, 27,416.39 and 12,313.70 is: 16,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,865.88 : 27,416.39 = 12,313.70 : x
  2. Step 2: Convert to fraction form
    19,865.88/27,416.39 = 12,313.70/x
  3. Step 3: Cross multiply
    19,865.88x = 27,416.39 × 12,313.70
  4. Step 4: Simplify right side
    19,865.88x = 337,597,002.89
  5. Step 5: Solve for x
    x = 337,597,002.89/19,865.88
  6. Step 6: Final answer
    x = 16,993.81

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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.