Home / 31,110.06-42,932.70-19,181.28

Finding the Fourth Proportional to 31,110.06, 42,932.70 and 19,181.28

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Solution

The fourth proportional to 31,110.06, 42,932.70 and 19,181.28 is: 26,470.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,110.06 : 42,932.70 = 19,181.28 : x
  2. Step 2: Convert to fraction form
    31,110.06/42,932.70 = 19,181.28/x
  3. Step 3: Cross multiply
    31,110.06x = 42,932.70 × 19,181.28
  4. Step 4: Simplify right side
    31,110.06x = 823,504,139.86
  5. Step 5: Solve for x
    x = 823,504,139.86/31,110.06
  6. Step 6: Final answer
    x = 26,470.67

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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.