Home / 31,115.43-42,938.91-16,968.24

Finding the Fourth Proportional to 31,115.43, 42,938.91 and 16,968.24

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Solution

The fourth proportional to 31,115.43, 42,938.91 and 16,968.24 is: 23,415.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,115.43 : 42,938.91 = 16,968.24 : x
  2. Step 2: Convert to fraction form
    31,115.43/42,938.91 = 16,968.24/x
  3. Step 3: Cross multiply
    31,115.43x = 42,938.91 × 16,968.24
  4. Step 4: Simplify right side
    31,115.43x = 728,597,730.22
  5. Step 5: Solve for x
    x = 728,597,730.22/31,115.43
  6. Step 6: Final answer
    x = 23,415.96

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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.