Home / 31,206.27-43,065.50-18,638.31

Finding the Fourth Proportional to 31,206.27, 43,065.50 and 18,638.31

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Solution

The fourth proportional to 31,206.27, 43,065.50 and 18,638.31 is: 25,721.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,206.27 : 43,065.50 = 18,638.31 : x
  2. Step 2: Convert to fraction form
    31,206.27/43,065.50 = 18,638.31/x
  3. Step 3: Cross multiply
    31,206.27x = 43,065.50 × 18,638.31
  4. Step 4: Simplify right side
    31,206.27x = 802,668,046.11
  5. Step 5: Solve for x
    x = 802,668,046.11/31,206.27
  6. Step 6: Final answer
    x = 25,721.37

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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.