Home / 30,922.88-42,672.36-16,775.20

Finding the Fourth Proportional to 30,922.88, 42,672.36 and 16,775.20

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Solution

The fourth proportional to 30,922.88, 42,672.36 and 16,775.20 is: 23,149.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,922.88 : 42,672.36 = 16,775.20 : x
  2. Step 2: Convert to fraction form
    30,922.88/42,672.36 = 16,775.20/x
  3. Step 3: Cross multiply
    30,922.88x = 42,672.36 × 16,775.20
  4. Step 4: Simplify right side
    30,922.88x = 715,837,373.47
  5. Step 5: Solve for x
    x = 715,837,373.47/30,922.88
  6. Step 6: Final answer
    x = 23,149.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.