Home / 30,985.97-42,761.09-16,838.82

Finding the Fourth Proportional to 30,985.97, 42,761.09 and 16,838.82

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Solution

The fourth proportional to 30,985.97, 42,761.09 and 16,838.82 is: 23,237.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.97 : 42,761.09 = 16,838.82 : x
  2. Step 2: Convert to fraction form
    30,985.97/42,761.09 = 16,838.82/x
  3. Step 3: Cross multiply
    30,985.97x = 42,761.09 × 16,838.82
  4. Step 4: Simplify right side
    30,985.97x = 720,046,339.61
  5. Step 5: Solve for x
    x = 720,046,339.61/30,985.97
  6. Step 6: Final answer
    x = 23,237.82

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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.