Home / 21,440.45-32,165.40-7,208.44

Finding the Fourth Proportional to 21,440.45, 32,165.40 and 7,208.44

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Solution

The fourth proportional to 21,440.45, 32,165.40 and 7,208.44 is: 10,814.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,440.45 : 32,165.40 = 7,208.44 : x
  2. Step 2: Convert to fraction form
    21,440.45/32,165.40 = 7,208.44/x
  3. Step 3: Cross multiply
    21,440.45x = 32,165.40 × 7,208.44
  4. Step 4: Simplify right side
    21,440.45x = 231,862,355.98
  5. Step 5: Solve for x
    x = 231,862,355.98/21,440.45
  6. Step 6: Final answer
    x = 10,814.25

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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.