Home / 31,789.81-43,871.93-18,363.52

Finding the Fourth Proportional to 31,789.81, 43,871.93 and 18,363.52

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Solution

The fourth proportional to 31,789.81, 43,871.93 and 18,363.52 is: 25,342.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,789.81 : 43,871.93 = 18,363.52 : x
  2. Step 2: Convert to fraction form
    31,789.81/43,871.93 = 18,363.52/x
  3. Step 3: Cross multiply
    31,789.81x = 43,871.93 × 18,363.52
  4. Step 4: Simplify right side
    31,789.81x = 805,643,063.99
  5. Step 5: Solve for x
    x = 805,643,063.99/31,789.81
  6. Step 6: Final answer
    x = 25,342.81

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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.