Home / 13,159.29-18,171.63-12,240.75

Finding the Fourth Proportional to 13,159.29, 18,171.63 and 12,240.75

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Solution

The fourth proportional to 13,159.29, 18,171.63 and 12,240.75 is: 16,903.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,159.29 : 18,171.63 = 12,240.75 : x
  2. Step 2: Convert to fraction form
    13,159.29/18,171.63 = 12,240.75/x
  3. Step 3: Cross multiply
    13,159.29x = 18,171.63 × 12,240.75
  4. Step 4: Simplify right side
    13,159.29x = 222,434,379.92
  5. Step 5: Solve for x
    x = 222,434,379.92/13,159.29
  6. Step 6: Final answer
    x = 16,903.22

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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.