Home / 31,455.30-43,394.00-18,701.25

Finding the Fourth Proportional to 31,455.30, 43,394.00 and 18,701.25

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Solution

The fourth proportional to 31,455.30, 43,394.00 and 18,701.25 is: 25,799.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.30 : 43,394.00 = 18,701.25 : x
  2. Step 2: Convert to fraction form
    31,455.30/43,394.00 = 18,701.25/x
  3. Step 3: Cross multiply
    31,455.30x = 43,394.00 × 18,701.25
  4. Step 4: Simplify right side
    31,455.30x = 811,521,926.53
  5. Step 5: Solve for x
    x = 811,521,926.53/31,455.30
  6. Step 6: Final answer
    x = 25,799.21

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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.