Home / 31,321.08-43,222.32-16,980.12

Finding the Fourth Proportional to 31,321.08, 43,222.32 and 16,980.12

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Solution

The fourth proportional to 31,321.08, 43,222.32 and 16,980.12 is: 23,432.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,321.08 : 43,222.32 = 16,980.12 : x
  2. Step 2: Convert to fraction form
    31,321.08/43,222.32 = 16,980.12/x
  3. Step 3: Cross multiply
    31,321.08x = 43,222.32 × 16,980.12
  4. Step 4: Simplify right side
    31,321.08x = 733,920,180.28
  5. Step 5: Solve for x
    x = 733,920,180.28/31,321.08
  6. Step 6: Final answer
    x = 23,432.15

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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.