Home / 18,988.50-26,182.80-12,265.26

Finding the Fourth Proportional to 18,988.50, 26,182.80 and 12,265.26

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Solution

The fourth proportional to 18,988.50, 26,182.80 and 12,265.26 is: 16,912.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.50 : 26,182.80 = 12,265.26 : x
  2. Step 2: Convert to fraction form
    18,988.50/26,182.80 = 12,265.26/x
  3. Step 3: Cross multiply
    18,988.50x = 26,182.80 × 12,265.26
  4. Step 4: Simplify right side
    18,988.50x = 321,138,849.53
  5. Step 5: Solve for x
    x = 321,138,849.53/18,988.50
  6. Step 6: Final answer
    x = 16,912.28

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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.