Home / 21,480.93-32,215.14-7,440.39

Finding the Fourth Proportional to 21,480.93, 32,215.14 and 7,440.39

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Solution

The fourth proportional to 21,480.93, 32,215.14 and 7,440.39 is: 11,158.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,480.93 : 32,215.14 = 7,440.39 : x
  2. Step 2: Convert to fraction form
    21,480.93/32,215.14 = 7,440.39/x
  3. Step 3: Cross multiply
    21,480.93x = 32,215.14 × 7,440.39
  4. Step 4: Simplify right side
    21,480.93x = 239,693,205.50
  5. Step 5: Solve for x
    x = 239,693,205.50/21,480.93
  6. Step 6: Final answer
    x = 11,158.42

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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.