Home / 13,530.96-20,278.08-5,203.08

Finding the Fourth Proportional to 13,530.96, 20,278.08 and 5,203.08

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Solution

The fourth proportional to 13,530.96, 20,278.08 and 5,203.08 is: 7,797.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,530.96 : 20,278.08 = 5,203.08 : x
  2. Step 2: Convert to fraction form
    13,530.96/20,278.08 = 5,203.08/x
  3. Step 3: Cross multiply
    13,530.96x = 20,278.08 × 5,203.08
  4. Step 4: Simplify right side
    13,530.96x = 105,508,472.49
  5. Step 5: Solve for x
    x = 105,508,472.49/13,530.96
  6. Step 6: Final answer
    x = 7,797.56

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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.