Home / 19,686.57-27,169.59-12,131.29

Finding the Fourth Proportional to 19,686.57, 27,169.59 and 12,131.29

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Solution

The fourth proportional to 19,686.57, 27,169.59 and 12,131.29 is: 16,742.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,686.57 : 27,169.59 = 12,131.29 : x
  2. Step 2: Convert to fraction form
    19,686.57/27,169.59 = 12,131.29/x
  3. Step 3: Cross multiply
    19,686.57x = 27,169.59 × 12,131.29
  4. Step 4: Simplify right side
    19,686.57x = 329,602,175.47
  5. Step 5: Solve for x
    x = 329,602,175.47/19,686.57
  6. Step 6: Final answer
    x = 16,742.49

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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.