Home / 31,609.91-43,630.36-19,666.12

Finding the Fourth Proportional to 31,609.91, 43,630.36 and 19,666.12

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Solution

The fourth proportional to 31,609.91, 43,630.36 and 19,666.12 is: 27,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,609.91 : 43,630.36 = 19,666.12 : x
  2. Step 2: Convert to fraction form
    31,609.91/43,630.36 = 19,666.12/x
  3. Step 3: Cross multiply
    31,609.91x = 43,630.36 × 19,666.12
  4. Step 4: Simplify right side
    31,609.91x = 858,039,895.40
  5. Step 5: Solve for x
    x = 858,039,895.40/31,609.91
  6. Step 6: Final answer
    x = 27,144.65

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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.