Home / 13,409.28-20,102.40-6,474.24

Finding the Fourth Proportional to 13,409.28, 20,102.40 and 6,474.24

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Solution

The fourth proportional to 13,409.28, 20,102.40 and 6,474.24 is: 9,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.28 : 20,102.40 = 6,474.24 : x
  2. Step 2: Convert to fraction form
    13,409.28/20,102.40 = 6,474.24/x
  3. Step 3: Cross multiply
    13,409.28x = 20,102.40 × 6,474.24
  4. Step 4: Simplify right side
    13,409.28x = 130,147,762.18
  5. Step 5: Solve for x
    x = 130,147,762.18/13,409.28
  6. Step 6: Final answer
    x = 9,705.80

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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.