Home / 18,990.36-26,169.70-13,675.14

Finding the Fourth Proportional to 18,990.36, 26,169.70 and 13,675.14

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Solution

The fourth proportional to 18,990.36, 26,169.70 and 13,675.14 is: 18,845.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,990.36 : 26,169.70 = 13,675.14 : x
  2. Step 2: Convert to fraction form
    18,990.36/26,169.70 = 13,675.14/x
  3. Step 3: Cross multiply
    18,990.36x = 26,169.70 × 13,675.14
  4. Step 4: Simplify right side
    18,990.36x = 357,874,311.26
  5. Step 5: Solve for x
    x = 357,874,311.26/18,990.36
  6. Step 6: Final answer
    x = 18,845.05

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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.