Home / 30,810.39-42,517.94-17,385.99

Finding the Fourth Proportional to 30,810.39, 42,517.94 and 17,385.99

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Solution

The fourth proportional to 30,810.39, 42,517.94 and 17,385.99 is: 23,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.39 : 42,517.94 = 17,385.99 : x
  2. Step 2: Convert to fraction form
    30,810.39/42,517.94 = 17,385.99/x
  3. Step 3: Cross multiply
    30,810.39x = 42,517.94 × 17,385.99
  4. Step 4: Simplify right side
    30,810.39x = 739,216,392.73
  5. Step 5: Solve for x
    x = 739,216,392.73/30,810.39
  6. Step 6: Final answer
    x = 23,992.44

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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.