Home / 31,365.20-47,032.68-18,221.33

Finding the Fourth Proportional to 31,365.20, 47,032.68 and 18,221.33

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Solution

The fourth proportional to 31,365.20, 47,032.68 and 18,221.33 is: 27,323.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,365.20 : 47,032.68 = 18,221.33 : x
  2. Step 2: Convert to fraction form
    31,365.20/47,032.68 = 18,221.33/x
  3. Step 3: Cross multiply
    31,365.20x = 47,032.68 × 18,221.33
  4. Step 4: Simplify right side
    31,365.20x = 856,997,983.06
  5. Step 5: Solve for x
    x = 856,997,983.06/31,365.20
  6. Step 6: Final answer
    x = 27,323.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.