Home / 13,478.08-20,212.24-5,687.48

Finding the Fourth Proportional to 13,478.08, 20,212.24 and 5,687.48

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Solution

The fourth proportional to 13,478.08, 20,212.24 and 5,687.48 is: 8,529.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.08 : 20,212.24 = 5,687.48 : x
  2. Step 2: Convert to fraction form
    13,478.08/20,212.24 = 5,687.48/x
  3. Step 3: Cross multiply
    13,478.08x = 20,212.24 × 5,687.48
  4. Step 4: Simplify right side
    13,478.08x = 114,956,710.76
  5. Step 5: Solve for x
    x = 114,956,710.76/13,478.08
  6. Step 6: Final answer
    x = 8,529.16

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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.