Home / 13,891.04-19,111.44-12,126.72

Finding the Fourth Proportional to 13,891.04, 19,111.44 and 12,126.72

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Solution

The fourth proportional to 13,891.04, 19,111.44 and 12,126.72 is: 16,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.04 : 19,111.44 = 12,126.72 : x
  2. Step 2: Convert to fraction form
    13,891.04/19,111.44 = 12,126.72/x
  3. Step 3: Cross multiply
    13,891.04x = 19,111.44 × 12,126.72
  4. Step 4: Simplify right side
    13,891.04x = 231,759,081.68
  5. Step 5: Solve for x
    x = 231,759,081.68/13,891.04
  6. Step 6: Final answer
    x = 16,684.07

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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.