Home / 15,164.70-20,997.27-13,998.30

Finding the Fourth Proportional to 15,164.70, 20,997.27 and 13,998.30

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Solution

The fourth proportional to 15,164.70, 20,997.27 and 13,998.30 is: 19,382.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,164.70 : 20,997.27 = 13,998.30 : x
  2. Step 2: Convert to fraction form
    15,164.70/20,997.27 = 13,998.30/x
  3. Step 3: Cross multiply
    15,164.70x = 20,997.27 × 13,998.30
  4. Step 4: Simplify right side
    15,164.70x = 293,926,084.64
  5. Step 5: Solve for x
    x = 293,926,084.64/15,164.70
  6. Step 6: Final answer
    x = 19,382.26

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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.