Home / 31,614.97-43,649.00-20,289.35

Finding the Fourth Proportional to 31,614.97, 43,649.00 and 20,289.35

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Solution

The fourth proportional to 31,614.97, 43,649.00 and 20,289.35 is: 28,012.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,614.97 : 43,649.00 = 20,289.35 : x
  2. Step 2: Convert to fraction form
    31,614.97/43,649.00 = 20,289.35/x
  3. Step 3: Cross multiply
    31,614.97x = 43,649.00 × 20,289.35
  4. Step 4: Simplify right side
    31,614.97x = 885,609,678.30
  5. Step 5: Solve for x
    x = 885,609,678.30/31,614.97
  6. Step 6: Final answer
    x = 28,012.35

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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.