Home / 13,485.92-20,232.55-4,125.73

Finding the Fourth Proportional to 13,485.92, 20,232.55 and 4,125.73

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Solution

The fourth proportional to 13,485.92, 20,232.55 and 4,125.73 is: 6,189.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.92 : 20,232.55 = 4,125.73 : x
  2. Step 2: Convert to fraction form
    13,485.92/20,232.55 = 4,125.73/x
  3. Step 3: Cross multiply
    13,485.92x = 20,232.55 × 4,125.73
  4. Step 4: Simplify right side
    13,485.92x = 83,474,038.51
  5. Step 5: Solve for x
    x = 83,474,038.51/13,485.92
  6. Step 6: Final answer
    x = 6,189.72

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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.