Home / 31,315.72-43,215.63-17,168.66

Finding the Fourth Proportional to 31,315.72, 43,215.63 and 17,168.66

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Solution

The fourth proportional to 31,315.72, 43,215.63 and 17,168.66 is: 23,692.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.72 : 43,215.63 = 17,168.66 : x
  2. Step 2: Convert to fraction form
    31,315.72/43,215.63 = 17,168.66/x
  3. Step 3: Cross multiply
    31,315.72x = 43,215.63 × 17,168.66
  4. Step 4: Simplify right side
    31,315.72x = 741,954,458.16
  5. Step 5: Solve for x
    x = 741,954,458.16/31,315.72
  6. Step 6: Final answer
    x = 23,692.72

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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.