Home / 13,009.12-19,518.06-4,125.90

Finding the Fourth Proportional to 13,009.12, 19,518.06 and 4,125.90

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Solution

The fourth proportional to 13,009.12, 19,518.06 and 4,125.90 is: 6,190.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.12 : 19,518.06 = 4,125.90 : x
  2. Step 2: Convert to fraction form
    13,009.12/19,518.06 = 4,125.90/x
  3. Step 3: Cross multiply
    13,009.12x = 19,518.06 × 4,125.90
  4. Step 4: Simplify right side
    13,009.12x = 80,529,563.75
  5. Step 5: Solve for x
    x = 80,529,563.75/13,009.12
  6. Step 6: Final answer
    x = 6,190.24

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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.