Home / 13,997.40-20,999.70-5,232.36

Finding the Fourth Proportional to 13,997.40, 20,999.70 and 5,232.36

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Solution

The fourth proportional to 13,997.40, 20,999.70 and 5,232.36 is: 7,849.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,997.40 : 20,999.70 = 5,232.36 : x
  2. Step 2: Convert to fraction form
    13,997.40/20,999.70 = 5,232.36/x
  3. Step 3: Cross multiply
    13,997.40x = 20,999.70 × 5,232.36
  4. Step 4: Simplify right side
    13,997.40x = 109,877,990.29
  5. Step 5: Solve for x
    x = 109,877,990.29/13,997.40
  6. Step 6: Final answer
    x = 7,849.89

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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.