Home / 31,108.12-46,668.38-8,921.68

Finding the Fourth Proportional to 31,108.12, 46,668.38 and 8,921.68

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Solution

The fourth proportional to 31,108.12, 46,668.38 and 8,921.68 is: 13,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,108.12 : 46,668.38 = 8,921.68 : x
  2. Step 2: Convert to fraction form
    31,108.12/46,668.38 = 8,921.68/x
  3. Step 3: Cross multiply
    31,108.12x = 46,668.38 × 8,921.68
  4. Step 4: Simplify right side
    31,108.12x = 416,360,352.48
  5. Step 5: Solve for x
    x = 416,360,352.48/31,108.12
  6. Step 6: Final answer
    x = 13,384.30

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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.