Home / 13,860.08-20,790.24-3,471.84

Finding the Fourth Proportional to 13,860.08, 20,790.24 and 3,471.84

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Solution

The fourth proportional to 13,860.08, 20,790.24 and 3,471.84 is: 5,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,860.08 : 20,790.24 = 3,471.84 : x
  2. Step 2: Convert to fraction form
    13,860.08/20,790.24 = 3,471.84/x
  3. Step 3: Cross multiply
    13,860.08x = 20,790.24 × 3,471.84
  4. Step 4: Simplify right side
    13,860.08x = 72,180,386.84
  5. Step 5: Solve for x
    x = 72,180,386.84/13,860.08
  6. Step 6: Final answer
    x = 5,207.79

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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.