Home / 31,176.16-46,772.28-8,991.28

Finding the Fourth Proportional to 31,176.16, 46,772.28 and 8,991.28

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Solution

The fourth proportional to 31,176.16, 46,772.28 and 8,991.28 is: 13,489.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,176.16 : 46,772.28 = 8,991.28 : x
  2. Step 2: Convert to fraction form
    31,176.16/46,772.28 = 8,991.28/x
  3. Step 3: Cross multiply
    31,176.16x = 46,772.28 × 8,991.28
  4. Step 4: Simplify right side
    31,176.16x = 420,542,665.72
  5. Step 5: Solve for x
    x = 420,542,665.72/31,176.16
  6. Step 6: Final answer
    x = 13,489.24

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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.