Home / 12,921.58-19,378.68-3,559.24

Finding the Fourth Proportional to 12,921.58, 19,378.68 and 3,559.24

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Solution

The fourth proportional to 12,921.58, 19,378.68 and 3,559.24 is: 5,337.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,921.58 : 19,378.68 = 3,559.24 : x
  2. Step 2: Convert to fraction form
    12,921.58/19,378.68 = 3,559.24/x
  3. Step 3: Cross multiply
    12,921.58x = 19,378.68 × 3,559.24
  4. Step 4: Simplify right side
    12,921.58x = 68,973,373.00
  5. Step 5: Solve for x
    x = 68,973,373.00/12,921.58
  6. Step 6: Final answer
    x = 5,337.84

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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.