Home / 31,257.36-46,871.85-13,479.61

Finding the Fourth Proportional to 31,257.36, 46,871.85 and 13,479.61

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Solution

The fourth proportional to 31,257.36, 46,871.85 and 13,479.61 is: 20,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,257.36 : 46,871.85 = 13,479.61 : x
  2. Step 2: Convert to fraction form
    31,257.36/46,871.85 = 13,479.61/x
  3. Step 3: Cross multiply
    31,257.36x = 46,871.85 × 13,479.61
  4. Step 4: Simplify right side
    31,257.36x = 631,814,227.32
  5. Step 5: Solve for x
    x = 631,814,227.32/31,257.36
  6. Step 6: Final answer
    x = 20,213.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.