Home / 13,999.29-20,991.65-5,226.99

Finding the Fourth Proportional to 13,999.29, 20,991.65 and 5,226.99

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Solution

The fourth proportional to 13,999.29, 20,991.65 and 5,226.99 is: 7,837.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,999.29 : 20,991.65 = 5,226.99 : x
  2. Step 2: Convert to fraction form
    13,999.29/20,991.65 = 5,226.99/x
  3. Step 3: Cross multiply
    13,999.29x = 20,991.65 × 5,226.99
  4. Step 4: Simplify right side
    13,999.29x = 109,723,118.50
  5. Step 5: Solve for x
    x = 109,723,118.50/13,999.29
  6. Step 6: Final answer
    x = 7,837.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.