Home / 21,440.88-32,157.96-13,118

Finding the Fourth Proportional to 21,440.88, 32,157.96 and 13,118

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Solution

The fourth proportional to 21,440.88, 32,157.96 and 13,118 is: 19,674.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.88 : 32,157.96 = 13,118 : x
  2. Step 2: Convert to fraction form
    21,440.88/32,157.96 = 13,118/x
  3. Step 3: Cross multiply
    21,440.88x = 32,157.96 × 13,118
  4. Step 4: Simplify right side
    21,440.88x = 421,848,119.28
  5. Step 5: Solve for x
    x = 421,848,119.28/21,440.88
  6. Step 6: Final answer
    x = 19,674.94

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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.