Home / 19,690.93-27,167.56-12,138.13

Finding the Fourth Proportional to 19,690.93, 27,167.56 and 12,138.13

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Solution

The fourth proportional to 19,690.93, 27,167.56 and 12,138.13 is: 16,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,690.93 : 27,167.56 = 12,138.13 : x
  2. Step 2: Convert to fraction form
    19,690.93/27,167.56 = 12,138.13/x
  3. Step 3: Cross multiply
    19,690.93x = 27,167.56 × 12,138.13
  4. Step 4: Simplify right side
    19,690.93x = 329,763,375.06
  5. Step 5: Solve for x
    x = 329,763,375.06/19,690.93
  6. Step 6: Final answer
    x = 16,746.97

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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.