Home / 13,539.08-20,305.55-6,515.51

Finding the Fourth Proportional to 13,539.08, 20,305.55 and 6,515.51

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Solution

The fourth proportional to 13,539.08, 20,305.55 and 6,515.51 is: 9,771.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.08 : 20,305.55 = 6,515.51 : x
  2. Step 2: Convert to fraction form
    13,539.08/20,305.55 = 6,515.51/x
  3. Step 3: Cross multiply
    13,539.08x = 20,305.55 × 6,515.51
  4. Step 4: Simplify right side
    13,539.08x = 132,300,928.84
  5. Step 5: Solve for x
    x = 132,300,928.84/13,539.08
  6. Step 6: Final answer
    x = 9,771.78

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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.