Home / 31,112.62-42,935.62-16,965.70

Finding the Fourth Proportional to 31,112.62, 42,935.62 and 16,965.70

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Solution

The fourth proportional to 31,112.62, 42,935.62 and 16,965.70 is: 23,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,112.62 : 42,935.62 = 16,965.70 : x
  2. Step 2: Convert to fraction form
    31,112.62/42,935.62 = 16,965.70/x
  3. Step 3: Cross multiply
    31,112.62x = 42,935.62 × 16,965.70
  4. Step 4: Simplify right side
    31,112.62x = 728,432,848.23
  5. Step 5: Solve for x
    x = 728,432,848.23/31,112.62
  6. Step 6: Final answer
    x = 23,412.78

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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.