Home / 38,991.12-58,491.88-13,684.62

Finding the Fourth Proportional to 38,991.12, 58,491.88 and 13,684.62

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Solution

The fourth proportional to 38,991.12, 58,491.88 and 13,684.62 is: 20,528.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,991.12 : 58,491.88 = 13,684.62 : x
  2. Step 2: Convert to fraction form
    38,991.12/58,491.88 = 13,684.62/x
  3. Step 3: Cross multiply
    38,991.12x = 58,491.88 × 13,684.62
  4. Step 4: Simplify right side
    38,991.12x = 800,439,150.89
  5. Step 5: Solve for x
    x = 800,439,150.89/38,991.12
  6. Step 6: Final answer
    x = 20,528.76

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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.