Home / 18,988.29-26,195.81-12,702.69

Finding the Fourth Proportional to 18,988.29, 26,195.81 and 12,702.69

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Solution

The fourth proportional to 18,988.29, 26,195.81 and 12,702.69 is: 17,524.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.29 : 26,195.81 = 12,702.69 : x
  2. Step 2: Convert to fraction form
    18,988.29/26,195.81 = 12,702.69/x
  3. Step 3: Cross multiply
    18,988.29x = 26,195.81 × 12,702.69
  4. Step 4: Simplify right side
    18,988.29x = 332,757,190.22
  5. Step 5: Solve for x
    x = 332,757,190.22/18,988.29
  6. Step 6: Final answer
    x = 17,524.34

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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.