Home / 31,640.91-43,673.12-19,697.16

Finding the Fourth Proportional to 31,640.91, 43,673.12 and 19,697.16

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Solution

The fourth proportional to 31,640.91, 43,673.12 and 19,697.16 is: 27,187.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,640.91 : 43,673.12 = 19,697.16 : x
  2. Step 2: Convert to fraction form
    31,640.91/43,673.12 = 19,697.16/x
  3. Step 3: Cross multiply
    31,640.91x = 43,673.12 × 19,697.16
  4. Step 4: Simplify right side
    31,640.91x = 860,236,333.85
  5. Step 5: Solve for x
    x = 860,236,333.85/31,640.91
  6. Step 6: Final answer
    x = 27,187.47

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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.