Home / 31,722.81-43,782.15-18,291.45

Finding the Fourth Proportional to 31,722.81, 43,782.15 and 18,291.45

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Solution

The fourth proportional to 31,722.81, 43,782.15 and 18,291.45 is: 25,244.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,722.81 : 43,782.15 = 18,291.45 : x
  2. Step 2: Convert to fraction form
    31,722.81/43,782.15 = 18,291.45/x
  3. Step 3: Cross multiply
    31,722.81x = 43,782.15 × 18,291.45
  4. Step 4: Simplify right side
    31,722.81x = 800,839,007.62
  5. Step 5: Solve for x
    x = 800,839,007.62/31,722.81
  6. Step 6: Final answer
    x = 25,244.90

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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.