Home / 31,455.83-43,394.73-18,701.78

Finding the Fourth Proportional to 31,455.83, 43,394.73 and 18,701.78

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Solution

The fourth proportional to 31,455.83, 43,394.73 and 18,701.78 is: 25,799.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.83 : 43,394.73 = 18,701.78 : x
  2. Step 2: Convert to fraction form
    31,455.83/43,394.73 = 18,701.78/x
  3. Step 3: Cross multiply
    31,455.83x = 43,394.73 × 18,701.78
  4. Step 4: Simplify right side
    31,455.83x = 811,558,476.65
  5. Step 5: Solve for x
    x = 811,558,476.65/31,455.83
  6. Step 6: Final answer
    x = 25,799.94

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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.