Home / 30,961.22-42,730.13-18,385.97

Finding the Fourth Proportional to 30,961.22, 42,730.13 and 18,385.97

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Solution

The fourth proportional to 30,961.22, 42,730.13 and 18,385.97 is: 25,374.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,961.22 : 42,730.13 = 18,385.97 : x
  2. Step 2: Convert to fraction form
    30,961.22/42,730.13 = 18,385.97/x
  3. Step 3: Cross multiply
    30,961.22x = 42,730.13 × 18,385.97
  4. Step 4: Simplify right side
    30,961.22x = 785,634,582.70
  5. Step 5: Solve for x
    x = 785,634,582.70/30,961.22
  6. Step 6: Final answer
    x = 25,374.80

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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.