Home / 13,908.43-19,187.20-12,316.70

Finding the Fourth Proportional to 13,908.43, 19,187.20 and 12,316.70

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Solution

The fourth proportional to 13,908.43, 19,187.20 and 12,316.70 is: 16,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.43 : 19,187.20 = 12,316.70 : x
  2. Step 2: Convert to fraction form
    13,908.43/19,187.20 = 12,316.70/x
  3. Step 3: Cross multiply
    13,908.43x = 19,187.20 × 12,316.70
  4. Step 4: Simplify right side
    13,908.43x = 236,322,986.24
  5. Step 5: Solve for x
    x = 236,322,986.24/13,908.43
  6. Step 6: Final answer
    x = 16,991.35

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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.