Home / 31,379.67-43,306.26-19,445.34

Finding the Fourth Proportional to 31,379.67, 43,306.26 and 19,445.34

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Solution

The fourth proportional to 31,379.67, 43,306.26 and 19,445.34 is: 26,836.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,379.67 : 43,306.26 = 19,445.34 : x
  2. Step 2: Convert to fraction form
    31,379.67/43,306.26 = 19,445.34/x
  3. Step 3: Cross multiply
    31,379.67x = 43,306.26 × 19,445.34
  4. Step 4: Simplify right side
    31,379.67x = 842,104,949.83
  5. Step 5: Solve for x
    x = 842,104,949.83/31,379.67
  6. Step 6: Final answer
    x = 26,836.00

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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.