Home / 31,110.60-42,910.74-19,170.12

Finding the Fourth Proportional to 31,110.60, 42,910.74 and 19,170.12

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Solution

The fourth proportional to 31,110.60, 42,910.74 and 19,170.12 is: 26,441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.60 : 42,910.74 = 19,170.12 : x
  2. Step 2: Convert to fraction form
    31,110.60/42,910.74 = 19,170.12/x
  3. Step 3: Cross multiply
    31,110.60x = 42,910.74 × 19,170.12
  4. Step 4: Simplify right side
    31,110.60x = 822,604,035.09
  5. Step 5: Solve for x
    x = 822,604,035.09/31,110.60
  6. Step 6: Final answer
    x = 26,441.28

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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.