Home / 30,791.28-42,491.84-16,644.12

Finding the Fourth Proportional to 30,791.28, 42,491.84 and 16,644.12

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Solution

The fourth proportional to 30,791.28, 42,491.84 and 16,644.12 is: 22,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,791.28 : 42,491.84 = 16,644.12 : x
  2. Step 2: Convert to fraction form
    30,791.28/42,491.84 = 16,644.12/x
  3. Step 3: Cross multiply
    30,791.28x = 42,491.84 × 16,644.12
  4. Step 4: Simplify right side
    30,791.28x = 707,239,283.98
  5. Step 5: Solve for x
    x = 707,239,283.98/30,791.28
  6. Step 6: Final answer
    x = 22,968.82

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1.5x scale

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.